OpenAI API pricing
OpenAI bills the API per 1M tokens. Input, cached input, and output have separate rates. GPT-6 Astra costs $10 per 1M input tokens and $50 per 1M output tokens. GPT-6.1 Sol costs $2 in and $10 out. GPT-6 Luna costs $0.10 in and $0.50 out. Figures come from the OpenAI API pricing docs on October 27, 2026.
Standard rates, short context
Short context means 272K input tokens or fewer. Prices are per 1M tokens.
| Model | Input | Cached input | Output |
|---|---|---|---|
| gpt-6-astra | $10.00 | $1.00 | $50.00 |
| gpt-6.1-sol | $2.00 | $0.10 | $10.00 |
| gpt-6.1-terra | $1.00 | $0.05 | $5.00 |
| gpt-6-sol | $2.00 | $0.20 | $10.00 |
| gpt-6-luna | $0.10 | $0.01 | $0.50 |
| gpt-5.6-sol | $4.00 | $0.40 | $20.00 |
| gpt-5.6-terra | $2.00 | $0.20 | $12.00 |
| gpt-5.6-luna | $0.20 | $0.02 | $1.20 |
| gpt-5.5 | $5.00 | $0.50 | $30.00 |
| gpt-5.4 | $2.50 | $0.25 | $15.00 |
| gpt-5.4-nano | $0.20 | $0.02 | $1.25 |
Long context runs above 272K input tokens and costs more. GPT-6 Astra long context costs $20 in and $75 out. GPT-5.5 Pro and GPT-5.4 Pro cost $30 in and $180 out at short context.
Batch, Flex, and Fast
| Tier | gpt-6-astra input | gpt-6-astra output | gpt-6.1-sol input | gpt-6.1-sol output |
|---|---|---|---|---|
| Standard | $10.00 | $50.00 | $2.00 | $10.00 |
| Batch | $5.00 | $25.00 | $1.00 | $5.00 |
| Flex | $5.00 | $25.00 | $1.00 | $5.00 |
| Fast | $20.00 | $100.00 | $4.00 | $20.00 |
Batch and Flex cost half of Standard. Fast mode costs double. The docs say Priority processing was renamed Fast mode on July 30, 2026.
Tools and audio
| Item | Price |
|---|---|
| Web search | $10.00 per 1k calls plus content tokens |
| Web search preview, non-reasoning models | $25.00 per 1k calls |
| File search storage | $0.10 per GB a day, 1 GB free |
| File search tool call | $2.50 per 1k calls |
| Containers, 1 GB | $0.03 per 20-minute session |
| gpt-transcribe | $0.0045 per minute |
| Whisper | $0.006 per minute |
| text-embedding-3-small | $0.02 per 1M tokens |
| text-embedding-3-large | $0.13 per 1M tokens |
Fees and dates to watch
Regional processing (data residency) adds a 10% uplift for models released on or after March 5, 2026. FedRAMP endpoints add the same 10% uplift. GPT-5.6 Sol promo pricing runs through November 21, 2026 or later, per the page.
Cost of 1M tokens in and 1M out
Our math: GPT-6.1 Sol costs $2 plus $10, or $12. GPT-6 Astra costs $10 plus $50, or $60 on Standard. The same Astra job costs $120 in Fast mode. Cached input and Batch cut these totals.
What we withhold
We do not list cache-write rates, long-context rates for every model, or the specialized model table. The docs list them in full.
Compare and track
See the Anthropic API pricing guide, the OpenAI Whisper pricing guide, the ChatGPT Business pricing guide, the Gemini API pricing guide, and all AI tools.
FAQ
How much does the OpenAI API cost? It depends on the model. GPT-6 Astra costs $10 per 1M input tokens and $50 per 1M output tokens. GPT-6 Luna costs $0.10 in and $0.50 out.
Is the OpenAI Batch API cheaper? Yes. Batch costs half of Standard. GPT-6 Astra on Batch costs $5 in and $25 out.
What is OpenAI Fast mode? It is the new name for Priority processing. It costs double. GPT-6 Astra Fast costs $20 in and $100 out.
How much does OpenAI web search cost? $10.00 per 1k calls. Search content tokens bill at the model rates.
Does OpenAI charge more for data residency? Yes. Regional processing endpoints add a 10% uplift for models released on or after March 5, 2026.
How we check
We read the OpenAI API pricing docs on October 27, 2026, as a page and as markdown. Get an alert when OpenAI changes a price.
Checked 2026-10-27. Prices and policies change. Confirm on the source before you buy.
Sources
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