LLM Comparison
Apodex 1.1 vs Leanstral 1.5
Side-by-side specs, pricing & capabilities · Updated August 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 24 | |
| Family | Apodex | Leanstral |
| Status | Current | Current |
| Release Date | Aug 2026 | Jun 2026 |
| Context Window | 262K tokens | 256K tokens |
| Input Price | Free | Free |
| Output Price | Free | Free |
| Pricing Notes | The official API campaign currently sets input, cached input, and output to $0.00 per 1M tokens. Published list prices are $0.30 input, $0.03 cached input, and $3.00 output per 1M tokens; requests above 200K input tokens are charged at twice the listed rates when paid pricing resumes. Apodex has not published the campaign end date, so pricing requires daily revalidation. | Mistral model card lists Leanstral 1.5 price as $0. Changelog says the Labs endpoint is scheduled to retire on 2026-09-30. |
| Capabilities | textreasoningcodelong-contextstreaming | textreasoningcodingformal-verificationtool-usestructured-output |
| Max Output | 262K tokens | 128K tokens |
| API Identifier | apodex-1.1 | labs-leanstral-1-5 |
| Benchmarks | ||
| Artificial Analysis Intelligence Index v4.1.1 | 44artificial-analysis | — |
| miniF2F | — | 100mistral |
| PutnamBench | — | 587mistral |
| FLTEval pass@8 | — | 43.2mistral |
| View Apodex 1.1 | View Leanstral 1.5 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Apodex 1.1Cheapest | $0.00 | $0.00 | $0.00 | — |
| Leanstral 1.5Cheapest | $0.00 | $0.00 | $0.00 | — |
Apodex
Apodex 1.1
Apodex 1.1 is a proprietary long-context reasoning model for complex professional work, research, coding, and evidence-heavy analysis through a first-party API.
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.
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