o3 Mini High API Pricing
OpenAI · Mid-tier · Proprietary · released 2025-02. Prices in USD per 1 million tokens. Data snapshot: 2026-09-06.
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: $1.10 per 1M tokens
- Output: $4.40 per 1M tokens
- Batch API (input/output): not published
- Prompt-cache read: $0.55
- Context window: 200K
- Arena ELO: 1363 (as of 2026-09-01)
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 | $0.0039 | $0.0034 | $336 |
| Knowledge Q&A | 2,000 / 800 | $0.0057 | $0.0050 | $495 |
| Meeting Summary | 10,000 / 1,200 | $0.016 | $0.016 | $1.6K |
| Marketing Content | 2,500 / 1,800 | $0.011 | $0.010 | $1.0K |
| Coding Task | 3,000 / 2,000 | $0.012 | $0.011 | $1.1K |
| Invoice Processing | 1,500 / 600 | $0.0043 | $0.0040 | $404 |
| Call Summary | 2,000 / 700 | $0.0053 | $0.0052 | $517 |
| Agent Workflow | 6,000 / 3,000 | $0.020 | $0.017 | $1.7K |
o3 Mini High 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 2026-09-06 via OpenRouter — negotiated rates, committed-use discounts and provisioned capacity are not shown.
| Host | Input $/1M | Output $/1M |
|---|---|---|
| OpenAI (the price shown above) | $1.10 | $4.40 |
Models comparable to o3 Mini High
The nearest Mid-tier models on Arena ELO, so a substitution is compared on quality as well as price.
- o3 Mini (OpenAI) — $1.10 in / $4.40 out per 1M, Arena ELO 1348
- GPT-5 Mini (OpenAI) — $0.25 in / $2.00 out per 1M, Arena ELO 1389
- o4 Mini (OpenAI) — $1.10 in / $4.40 out per 1M, Arena ELO 1391
- GPT-4o (OpenAI) — $2.50 in / $10.00 out per 1M, Arena ELO 1335
Common questions about o3 Mini High pricing
- How much does o3 Mini High cost?
- o3 Mini High costs $1.10 per million input tokens and $4.40 per million output tokens on the API.
- Does o3 Mini High offer batch or cached pricing?
- Prompt-cache reads cost $0.55/M input tokens. No batch pricing is published.
- What would o3 Mini High cost per month?
- For a support-ticket workload (1,500 input + 500 output tokens per request) at 100K requests/month, o3 Mini High costs about $385 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 o3 Mini High 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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