Llama 3.1 405B vs Mistral Large 2
Llama 3.1 405B (2024) and Mistral Large 2 (2025) are compact production models from AI at Meta and MistralAI. Llama 3.1 405B ships a 128k-token context window, while Mistral Large 2 ships a 128k-token context window. On HumanEval, Llama 3.1 405B leads by 4.2 pts. 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 safer overall; choose Llama 3.1 405B when provider fit matters.
Decision scorecard
Local evidence first| Signal | Llama 3.1 405B | Mistral Large 2 |
|---|---|---|
| Best for | general production evaluation | multimodal apps, tool-calling agents, and provider-routed production |
| Decision fit | Coding, Long context, and Classification | Coding, RAG, and Agents |
| Context window | 128k | 128k |
| Cheapest output | - | $2.40/1M tokens |
| Provider routes | 0 tracked | 3 tracked |
| Shared benchmarks | HumanEval leader | 4 shared |
Decision tradeoffs
- Llama 3.1 405B holds a shared-benchmark lead on HumanEval, ahead by 4.2 points.
- Local decision data tags Llama 3.1 405B for Coding, Long context, and Classification.
- Mistral Large 2 holds a shared-benchmark lead on Chatbot Arena, ahead by 37 points.
- Mistral Large 2 has broader tracked provider coverage for fallback and route flexibility.
- Mistral Large 2 uniquely exposes Vision, Multimodal, and JSON / Tool use in local model data.
- Local decision data tags Mistral Large 2 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.
Llama 3.1 405B
Unavailable
No complete token price in local provider data
Mistral Large 2
$984
Cheapest tracked route/tier: AWS Bedrock
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Llama 3.1 405B and Mistral Large 2; plan for SDK, billing, or endpoint changes.
- Mistral Large 2 adds Vision, Multimodal, and JSON / Tool use in local capability data.
- No overlapping tracked provider route is sourced for Mistral Large 2 and Llama 3.1 405B; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Multimodal, and JSON / Tool use before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-07-23 | 2025-11-25 |
| Context window | 128k | 128k |
| Parameters | 405B | 123B |
| Architecture | Decoder Only | Decoder Only |
| License | Llama 3 Community | Mistral License |
| Openness | Open weights | Open weights |
| Weights | Available | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: non-commercial |
| Knowledge cutoff | 2023-12 | 2025-07 |
Pricing and availability
| Pricing attribute | Llama 3.1 405B | Mistral Large 2 |
|---|---|---|
| Input price | - | $0.48/1M tokens |
| Output price | - | $2.40/1M tokens |
| Providers | - |
Capabilities
| Capability | Llama 3.1 405B | Mistral Large 2 |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | No |
| JSON / Tool use | No | Yes |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Llama 3.1 405B | Mistral Large 2 |
|---|---|---|
| HumanEval | 89.0 | 84.8 |
| Chatbot Arena | 1228.0 | 1265.0 |
| Massive Multitask Language Understanding | 88.6 | 84.0 |
| HellaSwag | 95.8 | 93.8 |
Continue comparing
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Last reviewed: 2026-09-18. Data sourced from public model cards and provider documentation.