Llama 3 70B vs Llama 3.1 405B
Llama 3 70B (2024) and Llama 3.1 405B (2024) are compact production models from AI at Meta. Llama 3 70B ships a 8k-token context window, while Llama 3.1 405B ships a 128k-token context window. On Google-Proof Q&A, Llama 3.1 405B leads by 7.4 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 16x more tokens; pick it for long-context work and Llama 3 70B for tighter calls.
Decision scorecard
Local evidence first| Signal | Llama 3 70B | Llama 3.1 405B |
|---|---|---|
| Best for | general production evaluation | general production evaluation |
| Decision fit | Coding and Classification | Coding, Long context, and Classification |
| Context window | 8k | 128k |
| Cheapest output | $2.75/1M tokens | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 5 shared | Google-Proof Q&A leader |
Decision tradeoffs
- Llama 3 70B has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Llama 3 70B for Coding and Classification.
- Llama 3.1 405B holds a shared-benchmark lead on Google-Proof Q&A, ahead by 7.4 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.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Llama 3 70B
$1,208
Cheapest tracked route/tier: Replicate API
Llama 3.1 405B
Unavailable
No complete token price in local provider data
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 70B and Llama 3.1 405B; plan for SDK, billing, or endpoint changes.
- No overlapping tracked provider route is sourced for Llama 3.1 405B and Llama 3 70B; plan for SDK, billing, or endpoint changes.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-04-18 | 2024-07-23 |
| Context window | 8k | 128k |
| Parameters | 70B | 405B |
| Architecture | Decoder Only | Decoder Only |
| License | Llama 3 Community | Llama 3 Community |
| Openness | Open weights | Open weights |
| Weights | Available | Available |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2023-12 | 2023-12 |
Pricing and availability
| Pricing attribute | Llama 3 70B | Llama 3.1 405B |
|---|---|---|
| Input price | $0.65/1M tokens | - |
| Output price | $2.75/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Llama 3 70B | Llama 3.1 405B |
|---|---|---|
| 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 70B | Llama 3.1 405B |
|---|---|---|
| Google-Proof Q&A | 44.1 | 51.5 |
| HumanEval | 72.6 | 89.0 |
| Massive Multitask Language Understanding | 80.5 | 88.6 |
| HellaSwag | 92.4 | 95.8 |
| Grade School Math 8K | 93.0 | 95.7 |
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Last reviewed: 2026-07-09. Data sourced from public model cards and provider documentation.