Historical model (deprecated). The rates below are the last recorded rates, not a recommendation for a new deployment.
OpenAI shut down this API model on 2026-10-23.
o1 API Pricing
OpenAI shut down this API model on 2026-10-23. No directly comparable current token quote is available. These rates were last verified on .
Moving off o1?
Same token usage, 3:1 input:output, standard list rates · excludes cache, batch and fast mode. Not a quality or compatibility claim. Full calculator →
OpenAI reasoning pricing history
USD · units shown per rate- Input: $20.00 / 1M tokensOutput: $80.00 / 1M tokensRate first observedDeprecated · 2026-12-11Verified 2026-11-12
- Input: $2.00 / 1M tokensOutput: $8.00 / 1M tokensRate first observedDeprecated · 2026-12-11Verified 2026-10-31
- Input: $150.00 / 1M tokensOutput: $600.00 / 1M tokensRate first observedShut downVerified 2026-11-12
- Input: $15.00 / 1M tokensOutput: $60.00 / 1M tokensRate first observedShut downVerified 2026-11-12
Newest first. Release dates describe the model, not when today's rates took effect. Observations show when we recorded rates, not launch pricing. Image and text token meters are separate; no fixed image-token savings mix is assumed. How we verify
OpenAI shut down this API model on 2026-10-23.
Published rates and billing units
| Billing dimension | USD list price |
|---|
Verified 2026-11-12 · Official source · Pricing methodology. Taxes, optional services and account-specific discounts are not included.
Cost examples
These examples use published list prices only. They exclude taxes, enterprise discounts, minimum charges, retries, batch discounts, and provider-specific billing rules.
1M input + 1M output
—
A direct per-million comparison against every other text model.
100K input + 25K output
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A compact chat, summarization, or analysis workload.
10M input + 2M output
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A monthly production estimate for heavier RAG or agent traffic.
75% cached input + 250K output
Not listed
OpenAI does not publish a cached-input rate for this model in our dataset.
Calculator for o1
Enter your own input, output, and cached-token assumptions. This calculator is preloaded with only o1, so the result stays focused on this model.
OpenAI shut down this API model on 2026-10-23. Token-only calculation unavailable.
Price history
No list-price movement across 86 daily snapshots from 2026-08-18 to 2026-11-11.
When to use o1
Good fit
- OpenAI workloads where this price tier and API surface fit your existing stack
Be careful with
- production launches until the provider restores availability