LLM Comparison
Leanstral 1.5 vs North Mini Code
Side-by-side specs, pricing & capabilities · Updated September 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 16 | |
| Family | Leanstral | North |
| Status | Current | Current |
| Release Date | Jun 2026 | Jun 2026 |
| Context Window | 256K tokens | 262K tokens |
| Input Price | Free | Free |
| Output Price | Free | Free |
| Pricing Notes | Mistral model card lists Leanstral 1.5 price as $0. Changelog says the Labs endpoint is scheduled to retire on 2026-09-30. | Cohere's official model documentation states North Mini Code is free for trial and production API keys until rate limits are reached; Model Vault production deployment is also supported. |
| Capabilities | textreasoningcodingformal-verificationtool-usestructured-output | reasoningagentic-codingtool-usestructured-outputmultilinguallocal-deployment |
| Max Output | 128K tokens | 66K tokens |
| API Identifier | labs-leanstral-1-5 | north-mini-code-1-0 |
| Benchmarks | ||
| miniF2F | 100mistral | — |
| PutnamBench | 587mistral | — |
| FLTEval pass@8 | 43.2mistral | — |
| Artificial Analysis Intelligence Index v4.1 | — | 20artificial-analysis |
| GPQA Diamond | — | 75.6566artificial-analysis |
| SciCode | — | 38.7731artificial-analysis |
| Terminal-Bench 2.1 | — | 35.5805artificial-analysis |
| View Leanstral 1.5 | View North Mini Code | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Leanstral 1.5Cheapest | $0.00 | $0.00 | $0.00 | — |
| North Mini CodeCheapest | $0.00 | $0.00 | $0.00 | — |
Mistral AI
Leanstral 1.5
Leanstral 1.5 is Mistral AI free Lean 4 formal proof-engineering model for automated theorem proving, autoformalization, and real-world code verification. Official Mistral docs list it as a Labs model with 119B total parameters, 6.5B active parameters, a 256k context window, 128k max output, $0 pricing, and the labs-leanstral-1-5 API identifier.
Cohere
North Mini Code
North Mini Code is Cohere's open-weight Mixture-of-Experts model for agentic coding, repository-level software engineering, terminal workflows, tool use, and local deployment.
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