gpt-5.5 vs claude-sonnet-4-5-20250929
Compare gpt-5.5 and claude-sonnet-4-5-20250929 side by side: input and output price per 1M tokens, context window, endpoints, and pricing type on ZipFlow.
| Model | gpt-5.5 | claude-sonnet-4-5-20250929Cheaper input |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Context | - | - |
| Input / 1M | $ 0.9 | $ 0.54 |
| Output / 1M | $ 5.4 | $ 2.7 |
| Cache / 1M | $ 0.09 | $ 0.054 |
| Endpoints | Chat, Response, Response, anthropic, gemini, openai-alpha-search | Chat, Response, Response, anthropic, gemini, openai-alpha-search |
| Pricing type | Per-token | Per-token |