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DeepSeek V3.1 TerminusOPEN
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
Prices update automatically — checked daily against provider list prices.
- $0.45 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 41% of the 191 open-weight models tracked here
- 8 of 14 DeepSeek models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for DeepSeek V3.1 Terminus, measured by Artificial Analysis. Higher is better. Measurement mode: Reasoning.
For the same budget, DeepSeek V3.1 Terminus delivers 2.6 times more capability. Open weights also mean you can self-host it and pay nothing per token.
Models at this level cost $1 per 1M tokens (median of 19) — this one costs $0.45.
Cheaper and better on this index: GLM 5.3 Flash · Gemini 3.7 Flash (batch) · GPT-5.6 Luna and 13 more
About this model
DeepSeek V3.1 Terminus is an open-weight AI model by DeepSeek. You can download and self-host it for free; the prices below are hosted-API list prices, tracked daily, for when you prefer convenience over self-hosting.
Frequently asked questions
What is DeepSeek V3.1 Terminus?
DeepSeek V3.1 Terminus is an AI language model from DeepSeek. It is open-weight: you can download it and run it on your own hardware, for free. It scores 31.4 on the Artificial Analysis intelligence index.
Is DeepSeek V3.1 Terminus free?
The weights are free and open — you can self-host DeepSeek V3.1 Terminus and pay nothing per token. If you prefer a hosted API, list prices are $0.27 per million input tokens and $1 per million output tokens.
What is DeepSeek V3.1 Terminus good at?
Independent benchmarks from Artificial Analysis give it GPQA 79.2%, MMLU-Pro 85.1%, Humanity's Last Exam 16.4%, Long Context Reasoning 68%, LiveCodeBench 79.8%, SciCode 40.6%, AIME 2025 89.7%, IFBench 57%, τ²-Bench 37.1%, τ-Bench Banking 21%, Terminal-Bench 44.9%, Terminal-Bench Hard 30.3%. It is particularly used for code generation.
Can I self-host DeepSeek V3.1 Terminus?
Yes. DeepSeek V3.1 Terminus has open weights, so you can download it and run it on your own GPU or server with tools like Ollama, vLLM or llama.cpp — with no per-token cost.