o1 API Pricing
OpenAI · Frontier · Proprietary · released 2024-12. Prices in USD per 1 million tokens. Data snapshot: 2026-09-11.
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.
- 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 2026-09-02)
Cost per request by business use case
List price vs optimized (prompt caching on the cached input share, batch API for async workloads, only where the provider publishes those rates).
| Use case | Tokens (in/out) | Cost/req (list) | Cost/req (optimized) | Monthly @100K req |
|---|---|---|---|---|
| Support Ticket | 1,500 / 500 | $0.052 | $0.046 | $4.6K |
| Knowledge Q&A | 2,000 / 800 | $0.078 | $0.068 | $6.8K |
| Meeting Summary | 10,000 / 1,200 | $0.222 | $0.215 | $21.5K |
| Marketing Content | 2,500 / 1,800 | $0.145 | $0.142 | $14.2K |
| Coding Task | 3,000 / 2,000 | $0.165 | $0.154 | $15.4K |
| Invoice Processing | 1,500 / 600 | $0.058 | $0.055 | $5.5K |
| Call Summary | 2,000 / 700 | $0.072 | $0.071 | $7.1K |
| Agent Workflow | 6,000 / 3,000 | $0.270 | $0.238 | $23.9K |
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 2026-09-11 via OpenRouter — negotiated rates, committed-use discounts and provisioned capacity are not shown.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| OpenAI (the price shown above) | $15.00 | $60.00 |
Models comparable to o1
The nearest Frontier models on Arena ELO, so a substitution is compared on quality as well as price.
- Claude Opus 4 (Anthropic) — $15.00 in / $75.00 out per 1M, Arena ELO 1414
- Claude Sonnet 4 (Anthropic) — $3.00 in / $15.00 out per 1M, Arena ELO 1390
- Claude Sonnet 4.5 (Anthropic) — $3.00 in / $15.00 out per 1M, Arena ELO 1455
- GPT-5.4 (OpenAI) — $2.50 in / $15.00 out per 1M, Arena ELO 1466
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.
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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