Where is the DeepSeek V4 Flash 0731 documentation?

The DeepSeek V4 Flash 0731 documentation on OpenRouter includes the Does DeepSeek V4 Have Vision? blog post, the Why Use OpenRouter for DeepSeek blog post, and the DeepSeek V4 Is Earning Agentic Token Share blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

How much does DeepSeek V4 Flash 0731 cost?

DeepSeek V4 Flash 0731 costs $0.0434/M input tokens and $0.30/M output tokens, with separate rates for Cache Read at $0.035/M tokens.

What is the context length of DeepSeek V4 Flash 0731?

DeepSeek V4 Flash 0731 has a 1,048,576 token context window. It supports up to 1,048,576 completion tokens.

Does DeepSeek V4 Flash 0731 support tool calling and structured outputs?

Yes. DeepSeek V4 Flash 0731 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

Which providers serve DeepSeek V4 Flash 0731?

DeepSeek V4 Flash 0731 is served by 23 providers on OpenRouter: Wafer, DeepInfra, Baidu Qianfan, Relace, Reka AI, DigitalOcean, Baseten (fp32), Venice and 15 more. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was DeepSeek V4 Flash 0731 released?

DeepSeek V4 Flash 0731 was released on July 31, 2026.

DeepSeek: DeepSeek V4 Flash 0731

deepseek/deepseek-v4-flash-0731

Model weights

Compare

DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoning, and agent workflows. This is the GA release of DeepSeek V4 Flash.

Modalities

In / out price

$0.0434 / $0.30per 1M

Context

1.0M

Released

Jul 31, 2026

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Latency / throughput


	$0.0434	$0.30	$0.035	0.34s	136 tok/s	99.61%
86% off	$0.44$0.05984	$1.32$0.1795	$0.014$0.001904	0.73s	104 tok/s	99.72%
	$0.06	$0.18	$0.015	0.40s	73 tok/s	100.00%
	$0.07	$0.14	$0.014	0.42s	90 tok/s	99.97%
Priority	$0.09	$0.27	$0.0225	0.38s	56 tok/s	100.00%
	$0.10	$0.23	$0.095	0.26s	134 tok/s	99.39%
	$0.10	$0.42	$0.06	0.53s	177 tok/s	100.00%
	$0.119	$0.238	$0.0238	0.49s	189 tok/s	100.00%
	$0.13	$0.26	$0.028	0.35s	186 tok/s	100.00%
	$0.13	$0.26	$0.028	0.26s	136 tok/s	100.00%
	$0.13	$0.26	$0.028	0.54s	125 tok/s	99.48%
	$0.13	$0.27	$0.05	0.47s	107 tok/s	100.00%
	$0.13	$0.495	$0.027	0.85s	64 tok/s	99.94%
70% off	$0.44$0.132	$1.32$0.396	$0.014$0.0042	3.40s	30 tok/s	100.00%
	$0.14	$0.28	$0.07	0.34s	192 tok/s	99.09%
	$0.14	$0.28	$0.05	0.56s	70 tok/s	98.60%
	$0.15	$0.30	$0.042	0.77s	33 tok/s	99.89%
	$0.15	$0.30	$0.042	1.40s	33 tok/s	99.63%
	$0.15	$0.50	$0.075	0.56s	66 tok/s	99.19%
	$0.22	$0.66	$0.028	1.05s	86 tok/s	99.26%
35% off	$0.44$0.286	$1.32$0.858	$0.014$0.0091	2.00s	65 tok/s	100.00%
	$0.352	$1.056	$0.0352	1.50s	95 tok/s	99.81%
	$0.374	$1.122	$0.0374	1.53s	95 tok/s	100.00%
7% off	$0.44$0.4092	$1.32$1.228	$0.028$0.02604	1.01s	48 tok/s	100.00%
	$0.44	$1.32	$0.044	5.97s	33 tok/s	25.00%
	$0.44	$1.32	$0.014	0.18s	120 tok/s	99.64%
	$0.44	$1.32	$0.028	3.44s	49 tok/s	99.93%
	$0.44	$1.32	$0.014	0.66s	86 tok/s	100.00%
Not used in Standard routing:Why these endpoints are not used
Flex	$0.048	$0.144	$0.012	1.78s	50 tok/s	99.86%

Input $0.0434Output $0.30
136 tok/s99.61% uptime
Input $0.05984Output $0.1795
86% off
104 tok/s99.72% uptime
Input $0.06Output $0.18
73 tok/s100.00% uptime
Input $0.07Output $0.14
90 tok/s99.97% uptime
Input $0.09Output $0.27
Priority
56 tok/s100.00% uptime
Input $0.10Output $0.23
134 tok/s99.39% uptime
Input $0.10Output $0.42
177 tok/s100.00% uptime
Input $0.119Output $0.238
189 tok/s100.00% uptime
Input $0.13Output $0.26
186 tok/s100.00% uptime
Input $0.13Output $0.26
136 tok/s100.00% uptime
Input $0.13Output $0.26
125 tok/s99.48% uptime
Input $0.13Output $0.27
107 tok/s100.00% uptime
Input $0.13Output $0.495
64 tok/s99.94% uptime
Input $0.132Output $0.396
70% off
30 tok/s100.00% uptime
Input $0.14Output $0.28
192 tok/s99.09% uptime
Input $0.14Output $0.28
70 tok/s98.60% uptime
Input $0.15Output $0.30
33 tok/s99.89% uptime
Input $0.15Output $0.30
33 tok/s99.63% uptime
Input $0.15Output $0.50
66 tok/s99.19% uptime
Input $0.22Output $0.66
86 tok/s99.26% uptime
Input $0.286Output $0.858
35% off
65 tok/s100.00% uptime
Input $0.352Output $1.056
95 tok/s99.81% uptime
Input $0.374Output $1.122
95 tok/s100.00% uptime
Input $0.4092Output $1.228
7% off
48 tok/s100.00% uptime
Input $0.44Output $1.32
33 tok/s25.00% uptime
Input $0.44Output $1.32
120 tok/s99.64% uptime
Input $0.44Output $1.32
49 tok/s99.93% uptime
Input $0.44Output $1.32
86 tok/s100.00% uptime
Not used in Standard routing:Why these endpoints are not used
Input $0.048Output $0.144
Flex
50 tok/s99.86% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$0.04056/M tokens

Output

$0.2667/M tokens

DeepSeek V4 Flash 0731 — Price history

Price history

No effective price data for this selection

		$0.0136	$0.178	79.7%	11.6%
		$0.0147	$0.396	91.8%	9.4%
		$0.0321	$0.139	67.5%	8.4%
		$0.0343	$0.179	56.9%	17.2%
		$0.0374	$0.494	89.9%	1.2%
		$0.0381	$0.299	62.3%	22.8%
		$0.0405	$0.238	82.4%	5.7%
		$0.0488	$0.260	79.6%	3.2%
	Priority	$0.0522	$0.266	55.6%	1.3%
		$0.0678	$1.121	91.0%	0.0%
		$0.0710	$0.420	72.3%	1.4%
		$0.0757	$0.300	68.7%	0.0%
		$0.0764	$0.660	74.8%	0.9%
		$0.0787	$0.270	64.1%	3.7%
		$0.0788	$0.856	74.8%	1.7%
		$0.0798	$0.259	49.1%	0.3%
		$0.0848	$0.298	60.2%	0.5%
		$0.0849	$0.259	44.2%	1.1%
		$0.0865	$0.280	59.3%	1.4%
		$0.0894	$1.055	82.9%	0.0%
		$0.0899	$0.500	80.0%	0.1%
		$0.0913	$0.279	69.5%	5.7%
		$0.0992	$0.229	63.3%	1.0%
		$0.1130	$1.232	77.6%	0.6%
		$0.1750	$1.320	62.2%	0.1%
		$0.1866	$1.320	59.5%	0.0%
		$0.2858	$1.318	37.4%	0.0%
		$0.2862	$1.319	38.8%	0.0%
Not used in Standard routing:Why these endpoints are not used
	Flex	$0.0187	$0.142	81.4%	0.5%

Effective in $0.0136Effective out $0.178
Token share
11.6%
Effective in $0.0147Effective out $0.396
Token share
9.4%
Effective in $0.0321Effective out $0.139
Token share
8.4%
Effective in $0.0343Effective out $0.179
Token share
17.2%
Effective in $0.0374Effective out $0.494
Token share
1.2%
Effective in $0.0381Effective out $0.299
Token share
22.8%
Effective in $0.0405Effective out $0.238
Token share
5.7%
Effective in $0.0488Effective out $0.260
Token share
3.2%
Effective in $0.0522Effective out $0.266
PriorityToken share
1.3%
Effective in $0.0678Effective out $1.121
Token share
0.0%
Effective in $0.0710Effective out $0.420
Token share
1.4%
Effective in $0.0757Effective out $0.300
Token share
0.0%
Effective in $0.0764Effective out $0.660
Token share
0.9%
Effective in $0.0787Effective out $0.270
Token share
3.7%
Effective in $0.0788Effective out $0.856
Token share
1.7%
Effective in $0.0798Effective out $0.259
Token share
0.3%
Effective in $0.0848Effective out $0.298
Token share
0.5%
Effective in $0.0849Effective out $0.259
Token share
1.1%
Effective in $0.0865Effective out $0.280
Token share
1.4%
Effective in $0.0894Effective out $1.055
Token share
0.0%
Effective in $0.0899Effective out $0.500
Token share
0.1%
Effective in $0.0913Effective out $0.279
Token share
5.7%
Effective in $0.0992Effective out $0.229
Token share
1.0%
Effective in $0.1130Effective out $1.232
Token share
0.6%
Effective in $0.1750Effective out $1.320
Token share
0.1%
Effective in $0.1866Effective out $1.320
Token share
0.0%
Effective in $0.2858Effective out $1.318
Token share
0.0%
Effective in $0.2862Effective out $1.319
Token share
0.0%
Not used in Standard routing:Why these endpoints are not used
Effective in $0.0187Effective out $0.142
FlexToken share
0.5%

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Throughput

192tok/s

P50, best across providers

Latency

0.18s

P50, best provider

Reasoning effortLatency / throughput

AutoExacto benchmarks

GPQA DiamondTAU-BenchMancer90.6%78.7%Morph90.4%78.0%Baidu Qianfan90.7%77.2%Together87.2%80.7%DeepInfra90.8%76.7%

+24 more providers

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.90%

Availability over the last 3 days

Last 72 hours

Availability 99.90%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

99.93%

Without Routing

95.10%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for DeepSeek: DeepSeek V4 Flash 0731 (Artificial Analysis, Design Arena and Vals AI)
Source	Benchmark	Score
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) Coding Index	69.1
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) Agentic Index	41.0
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) GPQA Diamond	90.8%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) HLE	38.6%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) AA-LCR	79.7%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) τ-Bench Banking	39.4%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) GDPval-AA	46.8%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) CritPt	16.6%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) SciCode	50.3%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) Terminal-Bench 4.0	12.1%
Artificial Analysis	DeepSeek V4 Flash 0731 (Max) Terminal-Bench 2.1	78.7%
Design Arena	DeepSeek-V4-Flash-0731 Models Arena 3D Elo	1188
Design Arena	DeepSeek-V4-Flash-0731 Models Arena Asciiart Elo	1087
Design Arena	DeepSeek-V4-Flash-0731 Models Arena Code Categories Elo	1218
Design Arena	DeepSeek-V4-Flash-0731 Models Arena Data Visualization Elo	1169
Design Arena	DeepSeek-V4-Flash-0731 Models Arena Game Development Elo	1198
Design Arena	DeepSeek-V4-Flash-0731 Models Arena SVG Elo	1170
Design Arena	DeepSeek-V4-Flash-0731 Models Arena UI Component Elo	1226
Design Arena	DeepSeek-V4-Flash-0731 Models Arena Website Elo	1230
Vals AI	DeepSeek V4 Flash 0731 BioMysteryBench	64.4%
Vals AI	DeepSeek V4 Flash 0731 Code Migration	38.6%
Vals AI	DeepSeek V4 Flash 0731 CorpFin v2	61.8%
Vals AI	DeepSeek V4 Flash 0731 CyberBench v1.1	72.1%
Vals AI	DeepSeek V4 Flash 0731 EMB	57.0%
Vals AI	DeepSeek V4 Flash 0731 Finance Agent (v2)	49.5%
Vals AI	DeepSeek V4 Flash 0731 GPQA Diamond	89.9%
Vals AI	DeepSeek V4 Flash 0731 Harvey's Legal Agent Benchmark v1	8.3%
Vals AI	DeepSeek V4 Flash 0731 IOI	32.7%
Vals AI	DeepSeek V4 Flash 0731 LiveCodeBench	87.3%
Vals AI	DeepSeek V4 Flash 0731 LegalBench	77.7%
Vals AI	DeepSeek V4 Flash 0731 Legal Research Bench	30.3%
Vals AI	DeepSeek V4 Flash 0731 MedCode	41.4%
Vals AI	DeepSeek V4 Flash 0731 MedScribe	80.4%
Vals AI	DeepSeek V4 Flash 0731 MMLU Pro	86.2%
Vals AI	DeepSeek V4 Flash 0731 ProgramBench	0.0%
Vals AI	DeepSeek V4 Flash 0731 ProofBench v1.1	56.0%
Vals AI	DeepSeek V4 Flash 0731 SkillsBench	50.7%
Vals AI	DeepSeek V4 Flash 0731 SWE-bench	88.8%
Vals AI	DeepSeek V4 Flash 0731 Tax Agent Bench	28.1%
Vals AI	DeepSeek V4 Flash 0731 TaxEval v2	70.7%
Vals AI	DeepSeek V4 Flash 0731 Terminal-Bench 4.0	18.7%
Vals AI	DeepSeek V4 Flash 0731 Terminal-Bench-Science	4.3%
Vals AI	DeepSeek V4 Flash 0731 Vals Index	48.0%
Vals AI	DeepSeek V4 Flash 0731 Vibe Code Bench v1.1	74.7%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Hermes Agent

Hermes Agent is an open-source, self-improving AI agent by Nous Research that runs persistently with memory across sessions, and builds reusable skills from experience. It comes with 40+ built-in tools, including web search, browser automation, and vision, plus scheduled automations and subagents.

1.81Ttokens

LangChain

new

783Btokens

There are many coding agents, but this one is yours.

333Btokens

OpenClaw

OpenClaw is an open-source AI agent that connects to your messaging apps and takes real actions on your behalf, from running commands and browsing the web to managing files and sending emails.

287Btokens

Digen AI

new

174Btokens

Rest of OpenRouter

136B

Top 5 Apps

43.3B

Available through EU in-region routing

DeepSeek: DeepSeek V4 Flash 0731 is available through EU in-region routing. Requests sent to eu.openrouter.ai are decrypted in the EU and routed only to shared provider endpoints in Europe (the EU/EEA, the UK, and Switzerland).

Providers in Europe

Inceptron

Prices in Europe

Inceptron: $0.13/M tokens input, $0.495/M tokens output

Base URL

https://eu.openrouter.ai/api/v1

Plan

Requires Business or Enterprise. Self-serve on Business: no contract, no monthly minimum. OpenRouter Business for EU in-region routing

Fails closed: if no shared provider endpoint in Europe is available, the request errors instead of leaving the region. Requests served by your own BYOK key go to your deployment’s region, which you control. In-region routing docs

More models from DeepSeek

DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the deepseek-flash API model name. V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on output from a 552B-parameter backbone, an asymmetric split that keeps per-token compute low relative to the model's total size. Image understanding is native to the architecture, with visual and text embeddings trained jointly from the start of pre-training rather than added afterward as in the earlier experimental V4 Flash Vision Exp.

It is suited for coding, terminal, and computer-use agents, along with long-horizon tasks that must run to completion across many steps and long-context analysis. Compressed KV caching cuts cache memory to roughly a quarter of the previous Flash generation, significantly reducing costs on agentic workloads. DeepSeek positions it as the cost-efficient tier of the V4.1 family and reports that it exceeds V4 Pro on performance, speed, and task completion time.

Text1.0M context$0.02 / $0.108

DeepSeek V4.1 Flash 1017 (batch)

Text1.0M context$0.036 / $0.318

DeepSeek Pro Latest

This model always redirects to the latest model in the DeepSeek Pro family.

Text1.0M context

DeepSeek Flash Latest

This model always redirects to the latest model in the DeepSeek Flash family.

Text1.0M context

DeepSeek V4.1 Flash

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on output from a 552B-parameter backbone, an asymmetric split that keeps per-token compute low relative to the model's total size. Image understanding is native to the architecture, with visual and text embeddings trained jointly from the start of pre-training rather than added afterward as in the earlier experimental V4 Flash Vision Exp.

Text1.0M context$0.0507 / $0.2028

DeepSeek V4.1 Flash (batch)

Text1.0M context$0.112 / $0.336

DeepSeek V4 Flash Vision Exp

DeepSeek V4 Flash Vision Exp is an experimental vision-enabled version of DeepSeek V4 Flash 0731 from DeepSeek, adding image understanding while matching the base model on text capabilities including agents, reasoning, and world knowledge. It is a sparse mixture-of-experts model with 13B active parameters out of 284B total.

It is suited for document and chart understanding, visual question answering, and multimodal agent workflows that interleave text and images.

Text1.0M context$0.2156 / $0.6468

DeepSeek V4 Pro 0813

DeepSeek V4 Pro 0813 is a large-scale mixture-of-experts model from DeepSeek. This is the GA release of DeepSeek V4 Pro.

Text1.0M context$0.0999 / $8

DeepSeek V4 Flash Latest

This model always redirects to the latest model in the DeepSeek V4 Flash family.

Text1.0M context

DeepSeek V4 Flash 0731 (batch)

Text1.0M context$0.048 / $0.144

DeepSeek V4 Pro 0423

DeepSeek V4 Pro is a large-scale Mixture-of-Experts model from DeepSeek with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. It is designed for advanced reasoning, coding, and long-horizon agent workflows, with strong performance across knowledge, math, and software engineering benchmarks.

Built on the same architecture as DeepSeek V4 Flash, it introduces a hybrid attention system for efficient long-context processing. Reasoning efforts high and xhigh are supported; xhigh maps to max reasoning. It is well suited for complex workloads such as full-codebase analysis, multi-step automation, and large-scale information synthesis, where both capability and efficiency are critical

Text1.0M context$0.2079 / $0.4157

DeepSeek V4 Flash 0423

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window. It is designed for fast inference and high-throughput workloads, while maintaining strong reasoning and coding performance.

The model includes hybrid attention for efficient long-context processing. Reasoning efforts high and xhigh are supported; xhigh maps to max reasoning. It is well suited for applications such as coding assistants, chat systems, and agent workflows where responsiveness and cost efficiency are important.

Text1.0M context$0.014 / $0.45

DeepSeek V3.2 Speciale

DeepSeek-V3.2-Speciale is a high-compute variant of DeepSeek-V3.2 optimized for maximum reasoning and agentic performance. It builds on DeepSeek Sparse Attention (DSA) for efficient long-context processing, then scales post-training reinforcement learning to push capability beyond the base model. Reported evaluations place Speciale ahead of GPT-5 on difficult reasoning workloads, with proficiency comparable to Gemini-3.0-Pro, while retaining strong coding and tool-use reliability. Like V3.2, it benefits from a large-scale agentic task synthesis pipeline that improves compliance and generalization in interactive environments.

Text131K context

DeepSeek V3.2

DeepSeek-V3.2 is a large language model designed to harmonize high computational efficiency with strong reasoning and agentic tool-use performance. It introduces DeepSeek Sparse Attention (DSA), a fine-grained sparse attention mechanism that reduces training and inference cost while preserving quality in long-context scenarios. A scalable reinforcement learning post-training framework further improves reasoning, with reported performance in the GPT-5 class, and the model has demonstrated gold-medal results on the 2025 IMO and IOI. V3.2 also uses a large-scale agentic task synthesis pipeline to better integrate reasoning into tool-use settings, boosting compliance and generalization in interactive environments.

Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

Text164K context$0.2088 / $0.3096

DeepSeek V3.2 Exp

DeepSeek-V3.2-Exp is an experimental large language model released by DeepSeek as an intermediate step between V3.1 and future architectures. It introduces DeepSeek Sparse Attention (DSA), a fine-grained sparse attention mechanism designed to improve training and inference efficiency in long-context scenarios while maintaining output quality. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

The model was trained under conditions aligned with V3.1-Terminus to enable direct comparison. Benchmarking shows performance roughly on par with V3.1 across reasoning, coding, and agentic tool-use tasks, with minor tradeoffs and gains depending on the domain. This release focuses on validating architectural optimizations for extended context lengths rather than advancing raw task accuracy, making it primarily a research-oriented model for exploring efficient transformer designs.

Text164K context$0.27 / $0.41

DeepSeek V3.1 Terminus

DeepSeek-V3.1 Terminus is an update to DeepSeek V3.1 that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's performance in coding and search agents. It is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes. It extends the DeepSeek-V3 base with a two-phase long-context training process, reaching up to 128K tokens, and uses FP8 microscaling for efficient inference. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

The model improves tool use, code generation, and reasoning efficiency, achieving performance comparable to DeepSeek-R1 on difficult benchmarks while responding more quickly. It supports structured tool calling, code agents, and search agents, making it suitable for research, coding, and agentic workflows.

Text164K context$0.27 / $1

DeepSeek V3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context training process, reaching up to 128K tokens, and uses FP8 microscaling for efficient inference. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

It succeeds the DeepSeek V3-0324 model and performs well on a variety of tasks.

Text164K context$0.25 / $0.95

DeepSeek V3.1 Base

This is a base model, trained only for raw next-token prediction. Unlike instruct/chat models, it has not been fine-tuned to follow user instructions. Prompts need to be written more like training text or examples rather than simple requests (e.g., “Translate the following sentence…” instead of just “Translate this”).

DeepSeek-V3.1 Base is a 671B parameter open Mixture-of-Experts (MoE) language model with 37B active parameters per forward pass and a context length of 128K tokens. Trained on 14.8T tokens using FP8 mixed precision, it achieves high training efficiency and stability, with strong performance across language, reasoning, math, and coding tasks.

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R1 Distill Qwen 7B

DeepSeek-R1-Distill-Qwen-7B is a 7 billion parameter dense language model distilled from DeepSeek-R1, leveraging reinforcement learning-enhanced reasoning data generated by DeepSeek's larger models. The distillation process transfers advanced reasoning, math, and code capabilities into a smaller, more efficient model architecture based on Qwen2.5-Math-7B. This model demonstrates strong performance across mathematical benchmarks (92.8% pass@1 on MATH-500), coding tasks (Codeforces rating 1189), and general reasoning (49.1% pass@1 on GPQA Diamond), achieving competitive accuracy relative to larger models while maintaining smaller inference costs.

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DeepSeek R1 0528 Qwen3 8B

DeepSeek-R1-0528 is a lightly upgraded release of DeepSeek R1 that taps more compute and smarter post-training tricks, pushing its reasoning and inference to the brink of flagship models like O3 and Gemini 2.5 Pro. It now tops math, programming, and logic leaderboards, showcasing a step-change in depth-of-thought. The distilled variant, DeepSeek-R1-0528-Qwen3-8B, transfers this chain-of-thought into an 8 B-parameter form, beating standard Qwen3 8B by +10 pp and tying the 235 B “thinking” giant on AIME 2024.

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DeepSeek: DeepSeek V4 Flash 0731

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