Model Tracker
DeepSeek-V3.1
DeepSeek-V3.1 is an AI model made by DeepSeek AI. DeepSeek AI released it on 21 August 2025. DeepSeek AI retired it on 22 September 2025.
DeepSeek-V3.1 is an AI model made by DeepSeek AI. DeepSeek AI released it on 21 August 2025. DeepSeek AI retired it on 22 September 2025. Its context window is 128,000 tokens. Its weights are open. Its licence is MIT.
- Released
- 21 August 2025 — api-docs.deepseek.com, read 16 October 2026
- Status
- Not confirmed: two readings disagree: retired and ga
- Takes
- Not confirmed: not found on the maker’s own pages
- Returns
- Text — huggingface.co, read 16 October 2026
- Open weights
- Yes — api-docs.deepseek.com, read 16 October 2026
- Licence
- MIT — huggingface.co, read 16 October 2026
- Context window
- 128,000 tokens — huggingface.co, read 16 October 2026
- Longest answer
- Not confirmed: The maker's DeepSeek-V3.1 release and model card do not state a standard maximum output-token limit for this model.
- Knowledge cutoff
- Not confirmed: The maker's DeepSeek-V3.1 release and model card do not state a knowledge-cutoff date.
- API price, input
- Not confirmed: The maker's current pricing page does not list DeepSeek-V3.1, so a current standard-tier input price for this model cannot be confirmed.
- API price, output
- Not confirmed: The maker's current pricing page does not list DeepSeek-V3.1, so a current standard-tier output price for this model cannot be confirmed.
- Where
- Downloadable weights — api-docs.deepseek.com, read 16 October 2026
- Parameters
- 671,000,000,000 — huggingface.co, read 16 October 2026
- Model card
- https://huggingface.co/deepseek-ai/DeepSeek-V3.1 — api-docs.deepseek.com, read 16 October 2026
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Arena
- Text Arena, deepseek-v3.1: 1,417 (1,411–1,423, 14,610 votes), published 15 October 2026
- Text Arena, deepseek-v3.1-thinking: 1,416 (1,409–1,422, 11,459 votes), published 15 October 2026
Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0
Epoch AI
- Epoch Capabilities Index, DeepSeek-V3.1: 139.9 (135.8–143.2), as of 19 October 2026
Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0
Questions
When was DeepSeek-V3.1 released?
DeepSeek AI released DeepSeek-V3.1 on 21 August 2025.
What is the context window of DeepSeek-V3.1?
The context window of DeepSeek-V3.1 is 128,000 tokens, as DeepSeek AI prints it.
Are the weights of DeepSeek-V3.1 open?
Yes: DeepSeek AI publishes the weights of DeepSeek-V3.1 for download.
What is the licence of DeepSeek-V3.1?
The licence of DeepSeek-V3.1 is MIT, as DeepSeek AI names it.
How many parameters does DeepSeek-V3.1 have?
DeepSeek-V3.1 has 671,000,000,000 parameters, as DeepSeek AI publishes it.
More from DeepSeek AI
- DeepSeek Coder
- DeepSeek LLM
- DeepSeek V4 Pro
- DeepSeek-Coder-V2
- DeepSeek-Coder-V2-Lite
- DeepSeek-Math-V2
- DeepSeek-OCR
- DeepSeek-OCR2
- DeepSeek-Prover-V1
- DeepSeek-Prover-V1.5
- DeepSeek-Prover-V2
- DeepSeek-R1
- DeepSeek-V2
- DeepSeek-V2-Lite
- DeepSeek-V2.5
- DeepSeek-V3
- DeepSeek-V3.1-Terminus
- DeepSeek-V3.2-Exp
- DeepSeek-V4-Flash
- DeepSeek-V4-Flash-Vision-Exp
- DeepSeek-V4.1-Flash
- DeepSeek-VL
- DeepSeek-VL2
- DeepSeek-VL2-Small
Sources
- DeepSeek-V3.1 Release | DeepSeek API Docs (read 16 October 2026)
- DeepSeek-V3.1 (read 16 October 2026)
- Change Log | DeepSeek API Docs (read 16 October 2026)
- Models & Pricing | DeepSeek API Docs (read 16 October 2026)