o4-mini pricing
o4-mini costs $1.1 per million input tokens and $4.4 per million output tokens , with cached input at $0.275. Batch requests are discounted 50%.
Price per million tokens
| Input | $1.1 |
| Cached input | $0.275 |
| Output | $4.4 |
| Context window | not published |
| Batch discount | −50% |
What it costs in practice
Monthly cost for three common workload shapes, with prompt caching applied.
| Workload | Shape | Per request | Per month |
|---|---|---|---|
| Support chatbot | 1.5k in / 400 out, 100k requests/month, 30% cached | $0.00304 | $303.88 |
| RAG / document Q&A | 12k in / 700 out, 50k requests/month, 60% cached | $0.0103 | $517.00 |
| Coding agent | 25k in / 2.5k out, 20k requests/month, 80% cached | $0.022 | $440.00 |
Model your own workload with caching, batching and tokenizer correction →
Comparable models from other providers
| Model | Provider | Input | Output |
|---|---|---|---|
| Claude Haiku 4.5 | Anthropic | $1 | $5 |
| Grok Build 0.1 | xAI | $1 | $2 |
| Gemini 2.5 Pro | $1.25 | $10 | |
| Grok 4.3 | xAI | $1.25 | $2.5 |
All figures verified 2026-08-18 against OpenAI's official pricing documentation . Fields the provider does not publish are shown as “—” rather than estimated.