AI providers
OpenAI API
Hosted models for text and image inputs, with Responses API access and client SDKs.
- Price
- Usage-based API pricing
- Checked
- Oct 18, 2026
Verified catalogue
AI API providers and platforms
Choose the platform that serves AI models; compare API access, billing and operational conditions separately from individual model specifications.
Explore the tools
3 profiles
Compare documented tools
AI providers
Anthropic Claude API
Programmatic access to Claude models through a REST API.
- Price
- Usage-based API pricing
- Checked
- Oct 18, 2026
AI providers
Google Gemini API
A developer API catalogue with text, multimodal, audio and image model families.
- Price
- Usage-based API pricing
- Checked
- Oct 18, 2026
Compare the source evidence
| Requirement | OpenAI API | Anthropic Claude API | Google Gemini API |
|---|---|---|---|
| Pricing | Usage-based API pricing | Usage-based API pricing | Usage-based API pricing |
| Who it is for | Hosted models for text and image inputs, with Responses API access and client SDKs. Verified Oct 18, 2026 · OpenAI API: official API documentation | Programmatic access to Claude models through a REST API. Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | A developer API catalogue with text, multimodal, audio and image model families. Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| Coverage limits | Capabilities, rates and tool support vary by model. A model catalogue entry does not establish access through a consumer subscription. Verified Oct 18, 2026 · OpenAI API: official API documentation | Direct API access requires a Console account and credentials; cloud-platform access has its own configuration. Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | Model availability differs by family. The documentation restricts Gemini 2.5 access to prior users and directs new projects to newer models. Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| API interfaces | Responses API and client SDKs Verified Oct 18, 2026 · OpenAI API: official API documentation | Messages API, Message Batches API, Token Counting API, Models API Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | Gemini API Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| Model catalogue | GPT-6 Astra, GPT-6.1 Sol, GPT-6 Luna Verified Oct 18, 2026 · OpenAI API: official API documentation | Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, Claude Haiku 5.5 Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | Gemini 3.8 Flash, Gemini 3.5 Flash-Lite Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| Billing basis | Model-dependent input and output token rates; tools can carry additional charges. Example rates belong to GPT-6.1 Sol, not every model. See each exact model and its service tier. Verified Oct 18, 2026 · OpenAI API: official API documentation | Model-dependent input and output token charges, with separate cache and batch pricing. Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | Model-specific free and paid tiers, with standard, batch and other service rates. Free and paid terms differ. Account eligibility, tool charges and dated rates need a model-specific check. Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| Availability | Request and token rate limits depend on the account usage tier. Documentation check only; this catalogue does not verify access for a particular account. Verified Oct 18, 2026 · OpenAI API: official API documentation | Console credentials or configured Workload Identity Federation are prerequisites. Verified Oct 18, 2026 · Anthropic Claude API: official API documentation | Gemini 2.5 access is limited to prior users; current model status must be checked individually. Verified Oct 18, 2026 · Google Gemini API: official API documentation |
| Coverage note | Official documentation checked on 18 October 2026; no hands-on test. | Official documentation checked on 18 October 2026; no hands-on test. | Official documentation checked on 18 October 2026; no hands-on test. |
1 requirement without reviewed evidence here
Not verified means the reviewed sources do not establish it; it does not mean a product lacks it or that it costs nothing.
- Data controls OpenAI API: not verified · Anthropic Claude API: not verified · Google Gemini API: not verified