Claude API vs OpenAI API
- AI Model APIs
Opus 5.5 tops the Artificial Analysis Intelligence Index v5.0 (Oct 27, 2026), while GPT-6.1 Sol scores 55 at US$1.27 per task against US$10.02 for Sonnet 5.5 at the same list price. Test both with caching on.
Comparisons
How does Claude API compare with the alternatives?
Claude API vs Gemini API
- AI Model APIs
Gemini 4 Argon scores 50 on the Artificial Analysis Intelligence Index v5.0 (Oct 27, 2026) at about two fifths of Sonnet 5.5's cost per task. Opus 5.5 holds the top score, and Haiku 5.5 beats Gemini 3.8 Flash for less.
Claude API vs Claude Code
- AI Coding Agents
Both run on the same Claude models, and Claude Code can bill to a Claude Console organization. Claude Code is a finished coding agent, and the API with the Agent SDK is how a platform team builds its own. Buy Claude Code for engineers' daily coding and build on the API when the agent belongs inside your product or pipeline.
Claude API vs Amazon Bedrock
- AI Model APIs
Anthropic's API wins on features and half-price batch for current models, and Bedrock wins when AWS procurement and data boundaries decide. List prices match on Global routing.
