What Claude Opus 4 does
Claude Opus 4 delivers frontier-level reasoning with extended thinking and 200k context for complex work.
How Claude Opus 4 compares with its closest alternatives
1 of the 5 closest alternatives has a free plan; Claude Opus 4 does not. All 5 offer an API, as Claude Opus 4 does. Claude Opus 4 was founded in 2024; the alternatives were founded between 2019 and 2024, 4 of them earlier. Claude Opus 4 is based in San Francisco, United States; 1 of its 5 alternatives is in the United States too, and the others in France, the United Arab Emirates, Germany and elsewhere.