OpenAI API
openai.com
Provides HTTP endpoints for text generation, fine-tuning, embeddings, image/video/audio generation, and related AI model tasks.
The OpenAI API API uses bearer token authentication; has usage based pricing; offers a free tier (Free tier: user in an allowed geography, $100/month usage limit); rate limits: Limits by RPM, RPD, TPM, TPD, IPM per organization/project; auto-graduated usage tiers (Free through Tier 5), visible via response headers. Verified 2026-07-12 with per-field source links.
Pricing
Per-token pricing, e.g. gpt-5.6-sol $5.00 input / $30.00 output per 1M tokens; tiers, batch, flex, and priority pricing available
developers.openai.com ↗Rate limits
Limits by RPM, RPD, TPM, TPD, IPM per organization/project; auto-graduated usage tiers (Free through Tier 5), visible via response headers
developers.openai.com ↗OpenAPI spec
not documented null
no source