OpenAI API
The reference API most tooling targets first, and the shape every other provider on this page imitates.
Price per million tokens
List price, read from the provider's own page · verified 2026-08-04
| Model | Input / 1M | Output / 1M | Cached in |
|---|---|---|---|
| gpt-5.4 | $2.5 | $15 | — |
| gpt-5.5 | $5 | $30 | — |
| gpt-5.6-luna | $0.2 | $1.2 | $0.02 |
| gpt-5.6-sol | $5 | $30 | $0.5 |
| gpt-5.6-terra | $2 | $12 | $0.2 |
Compared with
- Anthropic prompt caching vs OpenAI caching: 2026 comparison - VerticalAPI
- AWS Bedrock vs Azure OpenAI: 2026 comparison — VerticalAPI
- Azure OpenAI vs Anthropic: 2026 comparison - VerticalAPI
- Azure OpenAI vs Vertex AI: 2026 comparison — VerticalAPI
- Mistral La Plateforme vs OpenAI Platform: 2026 comparison - VerticalAPI
- OpenAI vs Anthropic: 2026 comparison — VerticalAPI
- OpenAI vs Cohere: GPT-5.6 vs Command A — VerticalAPI
- OpenAI vs Google: 2026 comparison — VerticalAPI
Missing a model, or a price that moved? Prices here are only ever copied from the vendor's own page and stamped with the date they were read — never estimated. A verified run measures what the price table cannot: time to first token, throughput under concurrency, function-calling reliability.