Model reference · open weights
INTELLECT-3.1 is an open-weight language model from PrimeIntellect. 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 | PrimeIntellect |
|---|---|
| Type | Language models |
| Task | Text gen |
| Parameters (lead) | 106.9B |
| Context | 128k tokens |
| Runs with | transformers |
| Based on | zai-org/GLM-4.5-Air-Base |
| Released | 2026-01-20 |
| Popularity | 740 downloads / month |
| Licence | Open weights |
About
Trained with prime-rl and verifiers Environments released on Environments Hub Read the Blog & Technical Report
INTELLECT-3.1 is a 106B (A12B) parameter Mixture-of-Experts reasoning model built as a continued training of INTELLECT-3 with additional reinforcement learning on math, coding, software engineering, and agentic tasks.
Training was performed with prime-rl using environments built with the verifiers library. All training and evaluation environments are available on the Environments Hub.
The model, training frameworks, and environments are open-sourced under fully-permissive licenses (MIT and Apache 2.0).
For more details, see the technical report.
The model can be served on 2x H200s:
vllm serve PrimeIntellect/INTELLECT-3.1 \
--tensor-parallel-size 2 \
--enable-auto-tool-choice \
--tool-call-parser qwen3_coder \
--reasoning-parser deepseek_r1
@misc{intellect3.1,
title={INTELLECT-3.1: Technical Report},
author={Prime Intellect Team},
year={2025},
url={https://huggingface.co/PrimeIntellect/INTELLECT-3.1}
}
From the published model card. Full card on the HuggingFace links in the sidebar.
Using it via the API
Once AxForge deploys intellect-3-1 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (intellect-3-1 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":"intellect-3-1","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.