OpenAI API vs Anthropic API
Compare OpenAI API and Anthropic API on deployment, pricing, model support, and more.
OpenAI API
- Tagline
- GPT-5.6, embeddings, image, and speech APIs — the default LLM API for most AI apps
- Description
- Programmatic access to OpenAI models: GPT-5.6 (Sol / Terra / Luna), legacy GPT-4o IDs where still offered, image and speech models, embeddings, and agent/assistant APIs. OpenAI-compatible Chat Completions remain the industry default interface. Confirm current model IDs and pricing on platform.openai.com — GPT-4 branding is outdated for new builds.
- Category
- Code / DevTools
- Pricing
- Freemium
- Metric
- 2,000,000 Developers using OpenAI API (source)
- Link
- Visit
Anthropic API
- Tagline
- Claude models API — 200K-token context, tool use, vision, and computer use for building production AI applications
- Description
- The Anthropic API provides programmatic access to Claude — Anthropic's family of AI models known for strong reasoning, instruction following, 200K-token context windows, and low hallucination rates. The API supports text generation, vision (image analysis), tool use (function calling), computer use (controlling browsers and desktops), and the Messages API with conversation history. Available in Python and TypeScript SDKs with streaming support.
- Category
- Code / DevTools
- Pricing
- Freemium
- Metric
- 200,000 Context window (tokens) (source)
- Link
- Visit
| Attribute | OpenAI API | Anthropic API |
|---|---|---|
| Tagline | GPT-5.6, embeddings, image, and speech APIs — the default LLM API for most AI apps | Claude models API — 200K-token context, tool use, vision, and computer use for building production AI applications |
| Category | Code / DevTools | Code / DevTools |
| Pricing | Freemium | Freemium |
| Description | Programmatic access to OpenAI models: GPT-5.6 (Sol / Terra / Luna), legacy GPT-4o IDs where still offered, image and speech models, embeddings, and agent/assistant APIs. OpenAI-compatible Chat Completions remain the industry default interface. Confirm current model IDs and pricing on platform.openai.com — GPT-4 branding is outdated for new builds. | The Anthropic API provides programmatic access to Claude — Anthropic's family of AI models known for strong reasoning, instruction following, 200K-token context windows, and low hallucination rates. The API supports text generation, vision (image analysis), tool use (function calling), computer use (controlling browsers and desktops), and the Messages API with conversation history. Available in Python and TypeScript SDKs with streaming support. |
| Metric | 2,000,000 Developers using OpenAI API (source) | 200,000 Context window (tokens) (source) |
| Link | Visit | Visit |