gpt-4o pricing
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. gpt-4o from OpenAI costs $2.50 per 1M input tokens and $10.00 per 1M output tokens. Cached input is $1.25 per 1M. Context window 128,000 tokens.
API id gpt-4o · OpenAI · source · updated 2026-09-26 · general-purpose
$2.50
Input / 1M tokens
$10.00
Output / 1M tokens
$1.25
Cached input / 1M
128K
Context window
gpt-4o specifications
- Provider
- OpenAI
- API id
gpt-4o- Model type
- general-purpose
- Context window
- 128K tokens
- Max output
- 16K tokens
- Currency
- USD
- Price source
- First-party
- Last checked
- 2026-09-26
gpt-4o across providers
The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.
| Provider | Input /1M | Cached /1M | Output /1M | 1M in + 1M out | vs vendor |
|---|---|---|---|---|---|
| $2.50 | $1.25 | $10.00 | $12.50 | — | |
OpenRouterHost | $2.50 | $1.25 | $10.00 | $12.50 | — |
What gpt-4o costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0075 |
| Document summary | 50,000 | 2,000 | $0.14 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $4.50 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does gpt-4o cost per 1M tokens?
- gpt-4o costs $2.50 per 1M input tokens and $10.00 per 1M output tokens on the standard tier. Cached input is $1.25 per 1M.
- What is gpt-4o's context window?
- gpt-4o accepts up to 128,000 tokens in a single request, and can return up to 16,384 output tokens.
- Is there a cheaper OpenAI model than gpt-4o?
- Yes. omni-moderation-latest is free per 1M input tokens versus $2.50 for gpt-4o.
- Where does this gpt-4o price come from?
- Directly from OpenAI's published pricing page, re-read every day and normalized to USD per 1,000,000 tokens.