o1 API Pricing
OpenAI · Frontier · Proprietary · released 2024-12. Prices in USD per 1 million tokens. Data snapshot: 2026-09-28.
Deprecated. The vendor has announced retirement of this model's API · shutdown 2026-10-23 · suggested replacement: GPT-5.6 Sol. It still carries a price because resellers still serve it; treat it as a model to migrate off, not one to start on.
o1 has held the same list price since 2026-08-15 and is the 25th cheapest of 31 Frontier models. Only one host, OpenAI, sells it, so there is no second price to shop. The vendor has announced its retirement, so it is a model to migrate off rather than start on.
- Input: $15.00 per 1M tokens
- Output: $60.00 per 1M tokens
- Batch API (input/output): not published
- Prompt-cache read: $7.50
- Context window: 200K
- Arena ELO: 1402 (as of 2026-09-25)
o1 market position
On blended price ($46.50 per 1M tokens at 30% input, 70% output) it is cheaper than 20% of Frontier models: 25th cheapest of 31. Across every category it is cheaper than 2% of priced text models in the catalogue: 275th cheapest of 281. Its Arena ELO of 1402 ranks 49th of the 68 models that carry one, above 28% of them.
o1 licence, size and capabilities
o1 is recorded here as proprietary: access is through an API, priced by the token. Its parameter count is not published. Listed capabilities: Text, Vision, Reasoning, Code, Agents. Filling its 200K context window once costs $3.00 in input tokens at list price.
Monthly cost at 100K requests, by business use case
From the after-discounts figure (prompt caching on the cached input share, batch API for async workloads, only where the provider publishes those rates), which assumes you implement both, to the list price. One figure means no discount is published.
| Use case | Tokens (in/out) | Monthly (after discounts – list) |
|---|---|---|
| Support Ticket | 1,500 / 500 | $4.6K – $5.3K |
| Knowledge Q&A | 2,000 / 800 | $6.8K – $7.8K |
| Meeting Summary | 10,000 / 1,200 | $21.5K – $22.2K |
| Marketing Content | 2,500 / 1,800 | $14.2K – $14.5K |
| Coding Task | 3,000 / 2,000 | $15.4K – $16.5K |
| Invoice Processing | 1,500 / 600 | $5.5K – $5.8K |
| Call Summary | 2,000 / 700 | $7.1K – $7.2K |
| Agent Workflow | 6,000 / 3,000 | $23.9K – $27.0K |
o1 pricing by host
A host is a company that runs the model and sells it by the token — the lab that made it, a cloud platform like Amazon Bedrock, Azure or Vertex, or an independent provider. One model, several sellers, and often several prices. This model is sold by 1 host. The price quoted above is the one we publish so that models stay comparable; it is not necessarily the cheapest way to buy this model. List prices as published on 2026-09-28 via OpenRouter — negotiated rates, committed-use discounts and provisioned capacity are not shown.
OpenAI is the only host with a published rate, $15.00 input / $60.00 output per 1M tokens, which is the price shown on this page.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| OpenAI (the price shown above) | $15.00 | $60.00 |
o1 price history
o1 has been in our daily price archive since tracking began on 2026-08-15, when it listed at $15.00 input / $60.00 output per 1M tokens. No list price change since tracking began on 2026-08-15. Last checked against the 2026-09-28 snapshot.
Alternatives to o1
- Next cheaper Frontier model: Claude Fable 5 (Anthropic) at $38.00 blended, 18% less.
- Next more expensive: o3 Pro (OpenAI) at $62.00 blended, 33% more.
The nearest Frontier models on Arena ELO, each with its blended price and score difference against o1.
- Claude Sonnet 4 (Anthropic) — $3.00 in / $15.00 out per 1M, Arena ELO 1391: 75% cheaper, 11 ELO points lower
- Claude Sonnet 4.5 (Anthropic) — $3.00 in / $15.00 out per 1M, Arena ELO 1455: 75% cheaper, 53 ELO points higher
- GPT-5.4 (OpenAI) — $2.50 in / $15.00 out per 1M, Arena ELO 1465: 76% cheaper, 63 ELO points higher
- Claude Opus 4.5 (Anthropic) — $5.00 in / $25.00 out per 1M, Arena ELO 1470: 59% cheaper, 68 ELO points higher
- Cheapest within 15 Arena points: MiniMax M2.5 (MiniMax), 98% cheaper, 11 ELO points lower, out of 12 models in that band.
Common questions about o1 pricing
- How much does o1 cost?
- o1 costs $15.00 per million input tokens and $60.00 per million output tokens on the API.
- Does o1 offer batch or cached pricing?
- Prompt-cache reads cost $7.50/M input tokens. No batch pricing is published.
- What would o1 cost per month?
- For a support-ticket workload (1,500 input + 500 output tokens per request) at 100K requests/month, o1 costs about $5.3K at list prices.
- Has the price of o1 changed?
- o1 has been in our daily price archive since tracking began on 2026-08-15, when it listed at $15.00 input / $60.00 output per 1M tokens. No list price change since tracking began on 2026-08-15. Last checked against the 2026-09-28 snapshot.
These are list prices: real cost also depends on caching, batching, negotiated discounts, marketplace agreements, and existing contracts. Get a FinOps review from OptimNow or compare all models.
Build the business case for o1 in the AI ROI Calculator: add your business value on top of these costs to get ROI, break-even and payback.
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