Category
LLM APIs pricing
LLM APIs are token-metered HTTP endpoints for text generation, reasoning, and multimodal tasks, all converging on an OpenAI-compatible request shape so switching costs are mostly a base-URL change. The real differentiators in 2026 are documentation and developer experience, production reliability (published SLAs and status-page track record at scale), the breadth of official SDKs and ecosystem integrations, and how fast a developer or AI agent can self-serve a working key. Compare the frontier incumbents (OpenAI, Anthropic, Google) on maturity and DX against challengers competing on speed (Groq), price (DeepSeek, Mistral), and openness, and note that consumer free tiers rarely extend to the raw API, where most access is pay-as-you-go with small trial credits.
| API | Billed by | Free tier | Verified |
|---|---|---|---|
 OpenAI API LLM APIs | Per token | No free tier | Jun 27, 2026 |
 Anthropic Claude API LLM APIs | Per token | No free tier | Jun 27, 2026 |
 Google Gemini API LLM APIs | Per token | Free tier or trial | Jun 27, 2026 |
 Mistral La Plateforme LLM APIs | Per token | Free tier or trial | Jun 27, 2026 |
 xAI Grok API LLM APIs | Per token | No free tier | Jun 27, 2026 |
 Groq LLM APIs | Per token | Free tier or trial | Jun 27, 2026 |
 DeepSeek API LLM APIs | Per token | No free tier | Jun 27, 2026 |