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Deprecated on Jul 28, 2025. 1 provider still lists it at the prices below.

O1 PreviewDeprecated

OpenAIFirst listed Sep 2024
Prompt caching
Compare O1 PreviewCount tokens for O1 Preview
Context
128K
Max output
33K
Serving providers
1
Cheapest input
$16.50 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.

Benchmarks

independent evaluations · source: Artificial Analysis
Headline indices
Intelligence Index
11.4
of 100
Coding Index
34.0
of 100
Frozen Sep 9, 2026
Individual benchmarks · click a row for effort variants
BenchmarkBest scoreEffortCost / task
GPQA Diamond76%default—
MMLU-ProFrozen Aug 18, 202685%default—
Artificial Analysis last published scores for this benchmark on Sep 9, 2026. Scores here are frozen at that date, and models released since are not on it.
Artificial Analysis last published scores for this benchmark on Aug 18, 2026. Scores here are frozen at that date, and models released since are not on it.

Pricing by serving provider

standard tier · per 1M tokens · click a provider to expand
Serving providerInput /1MOutput /1MEndpoints
AzureCheapest$16.50$66.001
Standardazure/eu/o1-preview
ComponentUnitStandard
Text cached in/1M tok$8.25
Text input/1M tok$16.50
Text output/1M tok$66.00

Price history

listed seller prices, input and output per 1M tokens
Input Output
$0.00$20.00$40.00$60.00Sep 12Oct 4Oct 5Jun 22Sep 24$60.00$15.00

Cost calculator

estimate your monthly spend on this model
$8,580
estimated / month

Model IDs

copy the exact identifier for your platform
azure/eu/o1-preview

Frequently asked questions

O1 Preview pricing, context and availability

Is O1 Preview still available?

O1 Preview was deprecated on 2025-07-28, but 1 serving provider still list it.

How much does O1 Preview cost?

O1 Preview costs $16.50 per 1M input tokens from Azure, and $66.00 per 1M output tokens from Azure.

What is the context window of O1 Preview?

O1 Preview accepts up to 128K tokens of context and can return up to 33K output tokens.

What can O1 Preview do?

O1 Preview supports prompt caching.

Other OpenAI models

compare pricing across the OpenAI lineup
gpt-oss-120b$0.03/1M · 23 providersgpt-oss-20b$0.0145/1M · 15 providersGPT-5 Mini$0.25/1M · 9 providersGPT-5$1.25/1M · 9 providersGPT-5 Nano$0.05/1M · 8 providersGPT-5.6 Luna$0.20/1M · 7 providersGPT-5.6 Terra$2.00/1M · 7 providersGPT-4o-mini$0.15/1M · 6 providers
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

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