Model reference · open weights
DeepSeek-Terminus is an open-weight language model from deepseek-ai. AxForge deploys and operates it for you on dedicated EU-owned hardware — with the licence handled where one is required.
Available as managed deployment — configured and operated for you on dedicated EU hardware, quoted per deployment.
What it is
| Maker | deepseek-ai |
|---|---|
| Type | Language models |
| Task | Text gen |
| Parameters (lead) | 684.5B |
| Context | 160k tokens |
| Runs with | transformers |
| Based on | deepseek-ai/DeepSeek-V3.1-Base |
| Released | 2025-09-22 |
| Popularity | 16k downloads / month |
| Licence | Open weights |
About
This update maintains the model's original capabilities while addressing issues reported by users, including:
| Benchmark | DeepSeek-V3.1 | DeepSeek-V3.1-Terminus |
|---|---|---|
| Reasoning Mode w/o Tool Use | ||
| MMLU-Pro | 84.8 | 85.0 |
| GPQA-Diamond | 80.1 | 80.7 |
| Humanity's Last Exam | 15.9 | 21.7 |
| LiveCodeBench | 74.8 | 74.9 |
| Codeforces | 2091 | 2046 |
| Aider-Polyglot | 76.3 | 76.1 |
| Agentic Tool Use | ||
| BrowseComp | 30.0 | 38.5 |
| BrowseComp-zh | 49.2 | 45.0 |
| SimpleQA | 93.4 | 96.8 |
| SWE Verified | 66.0 | 68.4 |
| SWE-bench Multilingual | 54.5 | 57.8 |
| Terminal-bench | 31.3 | 36.7 |
The template and tool-set of search agent have been updated, which is shown in assets/search_tool_trajectory.html.
The model structure of DeepSeek-V3.1-Terminus is the same as DeepSeek-V3. Please visit DeepSeek-V3 repo for more information about running this model locally.
For the model's chat template other than search agent, please refer to the DeepSeek-V3.1 repo.
Here we also provide an updated inference demo code in the inference folder to help the community get started with running our model and understand the details of model architecture.
NOTE: In the current model checkpoint, the parameters of self_attn.o_proj do not conform to the UE8M0 FP8 scale data format. This is a known issue and will be corrected in future model releases.
This repository and the model weights are licensed under the MIT License.
@misc{deepseekai2024deepseekv3technicalreport,
title={DeepSeek-V3 Technical Report},
author={DeepSeek-AI},
year={2024},
eprint={2412.19437},
archivePrefix={arXiv},
primaryClass={cs.CL},
url={https://arxiv.org/abs/2412.19437},
}
If you have any questions, please raise an issue or contact us at service@deepseek.com.
From the published model card. Full card on the HuggingFace links in the sidebar.
Using it via the API
Once AxForge deploys deepseek-terminus for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (deepseek-terminus below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/chat/completions \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"deepseek-terminus","messages":[{"role":"user","content":"Hello"}]}'
Create an account — your API key is available in the console. 5M tokens/month currently included with every new account at launch.