
DeepSeek: DeepSeek V4 Flash 0731
deepseek/deepseek-v4-flash-0731
Model weightsDeepSeek 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.
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).
86% off | $0.44$0.05984 | $1.32$0.1795 | $0.014$0.001904 | 0.64s | 102 tok/s | |
|---|---|---|---|---|---|---|
| $0.07000 | $0.1400 | $0.014000 | 0.43s | 93 tok/s | ||
| $0.14000 | $0.2800 | $0.070000 | 0.32s | 177 tok/s | ||
| $0.04340 | $0.3000 | $0.035000 | 0.38s | 117 tok/s | ||
| $0.11900 | $0.2380 | $0.023800 | 0.72s | 164 tok/s | ||
| $0.06000 | $0.1800 | $0.015000 | 0.43s | 76 tok/s | ||
| $0.13000 | $0.2600 | $0.028000 | 0.59s | 99 tok/s | ||
| $0.13000 | $0.2700 | $0.050000 | 0.42s | 114 tok/s | ||
| $0.13000 | $0.4950 | $0.027000 | 0.85s | 74 tok/s | ||
| $0.14000 | $0.2800 | $0.050000 | 0.54s | 71 tok/s | ||
| $0.18700 | $0.5610 | $0.018700 | 1.75s | 125 tok/s | ||
| $0.10000 | $0.4200 | $0.060000 | 0.72s | 144 tok/s | ||
| $0.15000 | $0.3000 | $0.042000 | 0.58s | 44 tok/s | ||
| $0.15000 | $0.5000 | $0.075000 | 0.66s | 69 tok/s | ||
| $0.15000 | $0.3000 | $0.042000 | 1.21s | 42 tok/s | ||
35% off | $0.44$0.28600 | $1.32$0.8580 | $0.014$0.009100 | 2.02s | 63 tok/s | |
| $0.22000 | $0.6600 | $0.028000 | 0.98s | 42 tok/s | ||
| $0.44000 | $1.3200 | $0.014000 | 0.63s | 90 tok/s | ||
| $0.12000 | $0.2300 | $0.115000 | 0.45s | 68 tok/s | ||
7% off | $0.44$0.40920 | $1.32$1.2280 | $0.028$0.026040 | 1.00s | 55 tok/s | |
| $0.44000 | $1.3200 | $0.014000 | 0.55s | 121 tok/s | ||
70% off | $0.44$0.13200 | $1.32$0.3960 | $0.014$0.004200 | 4.85s | 31 tok/s | |
| $0.44000 | $1.3200 | $0.028000 | 2.93s | 55 tok/s | ||
| $0.17600 | $0.5280 | $0.017600 | 2.02s | 84 tok/s | ||
| $0.13000 | $0.2600 | $0.028000 | 0.33s | 208 tok/s | ||
| $0.13000 | $0.2600 | $0.028000 | 0.27s | 146 tok/s | ||
| $0.44000 | $1.3200 | $0.044000 | -- | -- |
- Input $0.05984 / Output $0.179586% off102 tok/s99.73% uptime
- Input $0.07 / Output $0.1493 tok/s99.97% uptime
Input $0.14 / Output $0.28177 tok/s99.13% uptime- Input $0.0434 / Output $0.30117 tok/s99.63% uptime
- Input $0.119 / Output $0.238164 tok/s100.00% uptime
Input $0.06 / Output $0.1876 tok/s100.00% uptime- Input $0.13 / Output $0.2699 tok/s99.52% uptime
- Input $0.13 / Output $0.27114 tok/s99.97% uptime
- Input $0.13 / Output $0.49574 tok/s99.78% uptime
- Input $0.14 / Output $0.2871 tok/s98.79% uptime
- Input $0.187 / Output $0.561125 tok/s100.00% uptime
- Input $0.10 / Output $0.42144 tok/s100.00% uptime
- Input $0.15 / Output $0.3044 tok/s99.56% uptime
- Input $0.15 / Output $0.5069 tok/s99.35% uptime
- Input $0.15 / Output $0.3042 tok/s99.73% uptime
- Input $0.286 / Output $0.85835% off63 tok/s100.00% uptime
- Input $0.22 / Output $0.6642 tok/s95.39% uptime
- Input $0.44 / Output $1.3290 tok/s100.00% uptime
- Input $0.12 / Output $0.2368 tok/s99.44% uptime
- Input $0.4092 / Output $1.2287% off55 tok/s99.94% uptime
- Input $0.44 / Output $1.32121 tok/s99.36% uptime
- Input $0.132 / Output $0.39670% off31 tok/s100.00% uptime
- Input $0.44 / Output $1.3255 tok/s99.95% uptime
- Input $0.176 / Output $0.52884 tok/s99.66% uptime
- Input $0.13 / Output $0.26208 tok/s100.00% uptime
- Input $0.13 / Output $0.26146 tok/s100.00% uptime
- Input $0.44 / Output $1.32-- tok/s57.14% 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
DeepSeek V4 Flash 0731 — Price history
| $0.0123 | $0.395 | 93.6% | 7.2% | ||
| $0.0140 | $0.178 | 79.1% | 11.6% | ||
| $0.0319 | $0.139 | 67.9% | 8.2% | ||
| $0.0341 | $0.178 | 57.4% | 21.2% | ||
| $0.0369 | $0.494 | 90.4% | 1.3% | ||
| $0.0383 | $0.238 | 84.7% | 7.3% | ||
| $0.0384 | $0.299 | 58.9% | 18.5% | ||
| $0.0544 | $0.300 | 88.5% | 0.0% | ||
| $0.0566 | $0.260 | 71.9% | 2.1% | ||
| $0.0694 | $0.270 | 75.8% | 5.9% | ||
| $0.0716 | $0.904 | 82.6% | 0.1% | ||
| $0.0718 | $0.420 | 70.5% | 1.2% | ||
| $0.0751 | $0.856 | 76.1% | 1.5% | ||
| $0.0767 | $0.279 | 70.3% | 1.3% | ||
| $0.0831 | $0.259 | 45.9% | 0.3% | ||
| $0.0844 | $0.259 | 44.6% | 0.9% | ||
| $0.0852 | $0.298 | 59.9% | 0.5% | ||
| $0.0875 | $0.279 | 75.0% | 8.0% | ||
| $0.0962 | $1.320 | 80.7% | 0.3% | ||
| $0.0994 | $1.229 | 81.0% | 1.0% | ||
| $0.1049 | $1.020 | 77.7% | 0.0% | ||
| $0.1053 | $0.660 | 59.7% | 0.9% | ||
| $0.1076 | $0.229 | 44.7% | 0.4% | ||
| $0.1110 | $0.500 | 51.9% | 0.1% | ||
| $0.2192 | $1.320 | 51.8% | 0.0% | ||
| $0.3196 | $1.319 | 29.2% | 0.2% | ||
| — | — | — | — |
- Effective in $0.0123 / Effective out $0.395Token share7.2%
- Effective in $0.0140 / Effective out $0.178Token share11.6%
- Effective in $0.0319 / Effective out $0.139Token share8.2%
- Effective in $0.0341 / Effective out $0.178Token share21.2%
- Effective in $0.0369 / Effective out $0.494Token share1.3%
- Effective in $0.0383 / Effective out $0.238Token share7.3%
- Effective in $0.0384 / Effective out $0.299Token share18.5%
- Effective in $0.0544 / Effective out $0.300Token share0.0%
- Effective in $0.0566 / Effective out $0.260Token share2.1%
- Effective in $0.0694 / Effective out $0.270Token share5.9%
- Effective in $0.0716 / Effective out $0.904Token share0.1%
- Effective in $0.0718 / Effective out $0.420Token share1.2%
- Effective in $0.0751 / Effective out $0.856Token share1.5%
- Effective in $0.0767 / Effective out $0.279Token share1.3%
- Effective in $0.0831 / Effective out $0.259Token share0.3%
- Effective in $0.0844 / Effective out $0.259Token share0.9%
- Effective in $0.0852 / Effective out $0.298Token share0.5%
- Effective in $0.0875 / Effective out $0.279Token share8.0%
- Effective in $0.0962 / Effective out $1.320Token share0.3%
- Effective in $0.0994 / Effective out $1.229Token share1.0%
- Effective in $0.1049 / Effective out $1.020Token share0.0%
- Effective in $0.1053 / Effective out $0.660Token share0.9%
- Effective in $0.1076 / Effective out $0.229Token share0.4%
- Effective in $0.1110 / Effective out $0.500Token share0.1%
- Effective in $0.2192 / Effective out $1.320Token share0.0%
- Effective in $0.3196 / Effective out $1.319Token share0.2%
- Effective in — / Effective out —Token share —
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).
P50, best across providers
P50, best provider
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.
Availability over the last 3 days
Last 72 hoursAvailability over the last 24 hours
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.
| 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 | 1092 |
| Design Arena | DeepSeek-V4-Flash-0731 Models Arena Code Categories Elo | 1219 |
| 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 | 1227 |
| 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.
Activity
Token volume and request traffic to this model over time.
API
Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.
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
Documentation
Guides, cookbooks, blog posts, and tools for building with DeepSeek: DeepSeek V4 Flash 0731 on OpenRouter.
Frequently asked questions
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.
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.
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.
DeepSeek V4 Flash 0731 has a 1,048,576 token context window. It supports up to 1,048,576 completion tokens.
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.
DeepSeek V4 Flash 0731 is served by 23 providers on OpenRouter: Wafer, Baidu Qianfan, DeepInfra, 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.
DeepSeek V4 Flash 0731 was released on July 31, 2026.