OpenAI o1 vs Mistral Large 2
Performance benchmarks + pricing comparison — updated April 2026
OpenAI o1
OpenAIReasoning model optimized for complex problem-solving. Excels at math, science, and advanced coding.
| Input | $15.00/M |
| Output | $60.00/M |
| Context | 200K tokens |
| Best For | Complex math, advanced coding, scientific reasoning |
| Benchmark | 83/100 |
Mistral Large 2
MistralMistral's flagship model. Strong multilingual and coding capability.
| Input | $2.00/M |
| Output | $6.00/M |
| Context | 128K tokens |
| Best For | Enterprise coding, multilingual tasks |
| Benchmark | 65/100 |
Benchmark Performance Comparison
Third-party benchmark scores — higher is better. Data sourced from SWE-bench, LiveCodeBench, HumanEval, and BigCodeBench.
| Benchmark | OpenAI o1 | Mistral Large 2 | Leader |
|---|---|---|---|
| Overall Score | 83 | 65 | o1 leads by 18pts |
| SWE-bench Verified | 80 | 58 | o1 leads by 22pts |
| LiveCodeBench | 84 | 66 | o1 leads by 18pts |
| HumanEval | 95 | 84 | o1 leads by 11pts |
| BigCodeBench | 73 | 52 | o1 leads by 21pts |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o1 | Mistral Large 2 | Savings |
|---|---|---|---|
| Small Script (1K lines) | $2.32 | $0.25 | Mistral Large 2 saves $2.07 (89%) |
| Medium Feature (10K lines) | $17.25 | $1.90 | Mistral Large 2 saves $15.35 (89%) |
| Large Project (50K lines) | $86.25 | $9.50 | Mistral Large 2 saves $76.75 (89%) |
| Code Review (5K lines) | $4.13 | $0.50 | Mistral Large 2 saves $3.63 (88%) |
Value Analysis (Price per Benchmark Score Point)
Lower is better — how much you pay for each point of benchmark performance.
| Model | Overall Score | Price per Score Point | Verdict |
|---|---|---|---|
| OpenAI o1 | 83 | $0.181/pt | Higher cost per point |
| Mistral Large 2 | 65 | $0.031/pt | Better value |
Mistral Large 2 delivers the best value at $0.031 per score point.
Strengths & Weaknesses
OpenAI o1
- + Strong step-by-step reasoning
- + Best at math-heavy coding
- - Expensive
- - Slow
Mistral Large 2
- + European data residency
- + Good value
- - Smaller ecosystem
Verdict
Mistral Large 2 is cheaper at $2.00/M, but OpenAI o1 scores higher on benchmarks (83 vs 65).
Choose Mistral Large 2 for cost-sensitive projects, OpenAI o1 when performance matters most.
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