Cogito v2.1 671B
Cogito v2.1 671B MoE represents one of the strongest open models globally, matching performance of frontier closed and open models.
Specifications
| Lab | Deep Cogito |
|---|---|
| Context window | 128K tokens |
| Input price | $1.25/1M |
| Output price | $1.25/1M |
| Release | Nov 2025 |
Strengths
- One of the strongest open models globally
- Matches performance of frontier closed-source models
- Self-play RL training for robust reasoning
- 671B MoE architecture for broad capability
Weaknesses
- Extremely large model requiring significant hardware
- Fewer integrations than established open models
- Limited ecosystem and community tooling
Best for
- Cost-effective alternative to closed-source flagships
- Self-hosted high-capability inference
- Research and benchmarking
- Complex reasoning and code generation
In Depth: Cogito v2.1 671B
Summary
Cogito v2.1 671B is an AI model from Deep Cogito.
Released in Nov 2025. It currently appears in the Overall category on LMRank. It takes text input and produces text output, with a context window of 128K tokens. Input pricing is $1.25 per 1M tokens and output is $1.25 per 1M tokens on OpenRouter.