Llama 3.1 405B vs Mixtral 8x7B
Llama 3.1 405B (2024) and Mixtral 8x7B (2023) are compact production models from AI at Meta and MistralAI. Llama 3.1 405B ships a 128k-token context window, while Mixtral 8x7B ships a 32k-token context window. On Google-Proof Q&A, Mixtral 8x7B leads by 3.3 pts. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Llama 3.1 405B fits 4x more tokens; pick it for long-context work and Mixtral 8x7B for tighter calls.
Decision scorecard
Local evidence first| Signal | Llama 3.1 405B | Mixtral 8x7B |
|---|---|---|
| Best for | general production evaluation | provider-routed production |
| Decision fit | Coding, Long context, and Classification | Coding and Classification |
| Context window | 128k | 32k |
| Cheapest output | - | $0.45/1M tokens |
| Provider routes | 0 tracked | 18 tracked |
| Shared benchmarks | 4 shared | Google-Proof Q&A leader |
Decision tradeoffs
- Llama 3.1 405B holds a shared-benchmark lead on HumanEval, ahead by 8.5 points.
- Llama 3.1 405B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Llama 3.1 405B for Coding, Long context, and Classification.
- Mixtral 8x7B holds a shared-benchmark lead on Google-Proof Q&A, ahead by 3.3 points.
- Mixtral 8x7B has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Mixtral 8x7B for Coding and Classification.
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
Mixtral 8x7B
$233
Cheapest tracked route/tier: Mistral AI Studio
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 Mixtral 8x7B; plan for SDK, billing, or endpoint changes.
- No overlapping tracked provider route is sourced for Mixtral 8x7B and Llama 3.1 405B; plan for SDK, billing, or endpoint changes.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-07-23 | 2023-12-11 |
| Context window | 128k | 32k |
| Parameters | 405B | 8x7B |
| Architecture | Decoder Only | Mixture of Experts |
| License | Llama 3 Community | Apache 2.0OSI-approved |
| Openness | Open weights | Open source |
| Weights | Available | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | 2023-12 | 2023-12 |
Pricing and availability
| Pricing attribute | Llama 3.1 405B | Mixtral 8x7B |
|---|---|---|
| Input price | - | $0.15/1M tokens |
| Output price | - | $0.45/1M tokens |
| Providers | - |
Capabilities
| Capability | Llama 3.1 405B | Mixtral 8x7B |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| JSON / Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Llama 3.1 405B | Mixtral 8x7B |
|---|---|---|
| Google-Proof Q&A | 51.5 | 54.8 |
| HumanEval | 89.0 | 80.5 |
| Massive Multitask Language Understanding | 88.6 | 80.2 |
| HellaSwag | 95.8 | 90.9 |
Continue comparing
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Last reviewed: 2026-09-18. Data sourced from public model cards and provider documentation.