Mistral Large 2 vs o3 Mini
Mistral Large 2 (2025) and o3 Mini (2025) are frontier reasoning models from MistralAI and OpenAI. Mistral Large 2 ships a 128k-token context window, while o3 Mini ships a 200k-token context window. On MMLU PRO, o3 Mini leads by 9.4 pts. On pricing, Mistral Large 2 costs $0.48/1M input tokens versus $1.10/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Mistral Large 2 is ~129% cheaper at $0.48/1M; pay for o3 Mini only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Mistral Large 2 | o3 Mini |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and provider-routed production | reasoning-heavy apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 128k | 200k |
| Cheapest output | $2.40/1M tokens | $4.40/1M tokens |
| Provider routes | 3 tracked | 4 tracked |
| Shared benchmarks | 2 shared | MMLU PRO leader |
Decision tradeoffs
- Mistral Large 2 has the lower cheapest tracked output price at $2.40/1M tokens.
- Mistral Large 2 uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Mistral Large 2 for Coding, RAG, and Agents.
- o3 Mini holds a shared-benchmark lead on MMLU PRO, ahead by 9.4 points.
- o3 Mini has the larger context window for long prompts, retrieval packs, or transcript analysis.
- o3 Mini has broader tracked provider coverage for fallback and route flexibility.
- o3 Mini uniquely exposes Reasoning and Code execution in local model data.
- Local decision data tags o3 Mini for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Mistral Large 2
$984
Cheapest tracked route/tier: AWS Bedrock
o3 Mini
$1,980
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $996. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Mistral Large 2 and o3 Mini; plan for SDK, billing, or endpoint changes.
- o3 Mini is $2.00/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- o3 Mini adds Reasoning and Code execution in local capability data.
- No overlapping tracked provider route is sourced for o3 Mini and Mistral Large 2; plan for SDK, billing, or endpoint changes.
- Mistral Large 2 is $2.00/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning and Code execution before moving production traffic.
- Mistral Large 2 adds Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-11-25 | 2025-01-31 |
| Context window | 128k | 200k |
| Parameters | 123B | — |
| Architecture | Decoder Only | Decoder Only |
| License | Mistral License | Proprietary |
| Openness | Open weights | Proprietary |
| Weights | Unknown | Not released |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: non-commercial | Commercial use: conditional |
| Knowledge cutoff | 2025-07 | 2025-04 |
Pricing and availability
| Pricing attribute | Mistral Large 2 | o3 Mini |
|---|---|---|
| Input price | $0.48/1M tokens | $1.10/1M tokens |
| Output price | $2.40/1M tokens | $4.40/1M tokens |
| Providers |
Capabilities
| Capability | Mistral Large 2 | o3 Mini |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | No | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | Yes |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Mistral Large 2 | o3 Mini |
|---|---|---|
| MMLU PRO | 69.7 | 79.1 |
| Chatbot Arena | 1265.0 | 1335.0 |
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.