chatgpt-4o-latest vs Claude Sonnet 4.5
Both have similar output pricing, while Claude Sonnet 4.5 offers a larger context window. Choose chatgpt-4o-latest or Claude Sonnet 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | chatgpt-4o-latest | Claude Sonnet 4.5 |
|---|---|---|
| Provider | 302.AI | Anthropic |
| Input / 1M tokens | $5.00 | $3.00 |
| Output / 1M tokens | $15.00 | $15.00 |
| Context window | 128K | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Aug 2024 | Sep 2025 |
| Aider Polyglot score | 45.3 | — |
| LMArena (Chatbot Arena) Elo score | 1428 | 1438 |
| LMArena Vision Elo score | 1243 | — |
| LiveBench score | — | 67.9 |
| SWE-bench Verified score | — | 74.8 |
| SWE-bench Multilingual score | — | 67.0 |
| LMArena WebDev Elo score | — | 1393 |
| GPQA Diamond score | — | 82.3 |
| FrontierMath score | — | 15.2 |
| Epoch Capabilities Index score | — | 147 |
FAQ
Is chatgpt-4o-latest or Claude Sonnet 4.5 cheaper?
chatgpt-4o-latest and Claude Sonnet 4.5 have comparable output pricing.
Which has the larger context window, chatgpt-4o-latest or Claude Sonnet 4.5?
Claude Sonnet 4.5 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.