OpenAI pricing
8 OpenAI prices across LLM API, embedding model, speech, each re-read from the vendor's own pricing page every week. Best-ranked item: OpenAI text-embedding-3-small, 1 of 7 in its category.
LLM API
| Model | Price | Unit | Rank in category | Last verified |
|---|---|---|---|---|
| OpenAI GPT-5.6 Luna | $0.400 | blended $/Mtok (4:1) | 10 of 29 | 2026-09-05 |
| OpenAI GPT-5.6 Terra | $4.00 | blended $/Mtok (4:1) | 25 of 29 | 2026-09-05 |
| OpenAI GPT-5.6 Sol | $10.00 | blended $/Mtok (4:1) | 29 of 29 | 2026-09-05 |
Embedding model
| Model | Price | Unit | Rank in category | Last verified |
|---|---|---|---|---|
| OpenAI text-embedding-3-small | $0.020 | $/Mtok | 1 of 7 | 2026-09-05 |
| OpenAI text-embedding-3-large | $0.130 | $/Mtok | 7 of 7 | 2026-09-05 |
Speech
| Model | Price | Unit | Rank in category | Last verified |
|---|---|---|---|---|
| OpenAI gpt-4o-mini-transcribe | $0.0030 | $/minute | 2 of 10 | 2026-09-05 |
| OpenAI gpt-transcribe | $0.0045 | $/minute | 6 of 10 | 2026-09-05 |
| OpenAI gpt-4o-transcribe | $0.0060 | $/minute | 8 of 10 | 2026-09-05 |
Price movements
No price movement has been detected for OpenAI since the index started. When one is, it appears here and in the change log.
Where these figures come from
Every OpenAI figure is read from 4 vendor pages:
- https://developers.openai.com/api/docs/models/text-embedding-3-large
- https://developers.openai.com/api/docs/models/text-embedding-3-small
- https://developers.openai.com/api/docs/pricing
- https://openai.com/api/pricing/
The weekly check re-reads each page and records any change with both the old and new figure. Prices are USD list rates excluding tax; negotiated and volume pricing are not modelled. See the methodology for how failures to verify are handled, and the full price index to compare OpenAI against every other vendor tracked here.