Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-4o (March 2025, chatgpt-4o-latest) | Llama 3.1 Instruct 405B |
|---|---|---|
| Input ($/M tokens) | $0 | $2.75 |
| Output ($/M tokens) | $0 | $6.5 |
Data from Artificial Analysis API — 12 benchmarks
GPT-4o (March 2025, chatgpt-4o-latest) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $3.69/M for Llama 3.1 Instruct 405B.
GPT-4o (March 2025, chatgpt-4o-latest) wins 9 out of 12 benchmarks compared to 3 for Llama 3.1 Instruct 405B. See the detailed benchmark chart above for per-category results.
Llama 3.1 Instruct 405B generates tokens faster at 31 tok/s vs 0 tok/s. GPT-4o (March 2025, chatgpt-4o-latest) also has lower time-to-first-token (0.00s vs 0.47s).
Choose based on your priorities: GPT-4o (March 2025, chatgpt-4o-latest) for lower cost, GPT-4o (March 2025, chatgpt-4o-latest) for stronger benchmark performance, and Llama 3.1 Instruct 405B for faster generation. For latency-sensitive apps, check the TTFT comparison above.