Reference

Models, account access, limits, and sources separated by provider and product.

A subscription, API key, and IDE-provided access may have different billing. Check the active access method before comparing usage.

• Anthropic model catalog
• OpenAI: model catalog
• Google: model catalog
• Claude access and limits
• Compare API cost and context correctly Anthropic API + OpenAI API + Gemini API

  Separate cumulative usage from peak context, account for the chosen pricing conditions, and measure quality independently.

• What changed on this site Claude

  Corrections, retractions and findings worth knowing about if you read something here before. Silent on typos and tidying.

• Check Gemini, Gemini CLI, and API access Gemini + Gemini CLI + Gemini API

  Separate a developer's Google sign-in, CLI authentication, API project, and effective model access.

• Official documentation, and when to go there instead Shared methods

  This site covers decisions and failure modes. For what a button does, what a model costs, or what a contract says, the vendor's own pages are better.

• Check your ChatGPT, Codex, and API access ChatGPT + Codex + OpenAI API

  Identify the account and billing path actually used by a developer task, including Codex hosted inside an IDE.

Glossary · Sources and verification