Claude Opus 5 vs OpenAI: GPT-5.6 Sol
OpenAI: GPT-5.6 Sol is 1.3× cheaper for input tokens: Claude Opus 5 costs $5.00 per M and OpenAI: GPT-5.6 Sol costs $4.00 per M. OpenAI: GPT-5.6 Sol is 1.3× cheaper for output tokens: Claude Opus 5 costs $25.00 per M and OpenAI: GPT-5.6 Sol costs $20.00 per M. About the same: Claude Opus 5 takes up to 1,000,000 tokens of context and OpenAI: GPT-5.6 Sol up to 1,050,000.
| Claude Opus 5 | OpenAI: GPT-5.6 Sol | |
|---|---|---|
| Model id | anthropic/claude-opus-5 | openai/gpt-5.6-sol |
| Input | $5.00 per M | $4.00 per M |
| Output | $25.00 per M | $20.00 per M |
| Context length | 1,000,000 tokens | 1,050,000 tokens |
| Accepts | file, image, text | file, image, text |
| Produces | text | text |
| Served by | anthropic | openai |
Prices are the providers' list prices per million tokens, as of . Both run on your own provider key through one OpenAI-compatible endpoint, with no fee on the tokens.