GPT-4o pricing & benchmarks
GPT-4o is available from OpenAI at $2.50 per million input tokens and $10.00 per million output tokens ($4.38 blended at 3:1). It accepts up to 128,000 tokens of context. GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as...
Pricing
Per million tokens · OpenRouter
Input$2.50
Output$10.00
Blended (3:1)$4.38
Specification
openai/gpt-4o
Context window128K
Max output16K
ReleasedMay 2024
LicenceProprietary
Modalitiesin:text, in:image, in:file, out:text
Benchmarks
Independently run — not vendor self-reports. Every score links its source.
| Benchmark | Score | Config | Run | Source |
|---|---|---|---|---|
| GPQA Diamond | 47.9% ±2.6 | — | 2025-02-05 | Independently run · Epoch AI |
| SWE-bench Verified | 31.0% ±2.1 | — | 2026-02-11 | Independently run · Epoch AI |
| OTIS Mock AIME | 6.3% ±2.4 | — | 2025-02-25 | Independently run · Epoch AI |
Scores published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0.
Cheaper models that score at least as well on GPQA Diamond
Strictly lower blended price AND an equal-or-higher GPQA Diamond score. One benchmark is one dimension — a model that wins here may still be weaker at your specific task.
| Model | Provider | Blended $/1M | GPQA Diamond | |
|---|---|---|---|---|
| gpt-oss-120b | OpenAI | $0.070 (−98%) | 75.8% | Compare → |
| Phi 4 | Microsoft | $0.088 (−98%) | 56.1% | Compare → |
| DeepSeek V4 Flash 0731 | DeepSeek | $0.113 (−97%) | 91.0% | Compare → |
| GPT-5 Nano | OpenAI | $0.138 (−97%) | 69.4% | Compare → |
| Llama 4 Scout | Meta | $0.150 (−97%) | 51.8% | Compare → |
Where to run GPT-4o
2 hosts · all priced within ~5% of each other. Blended at 3:1. ⚠ marks an option serving less context than the best available, or re-pricing above a prompt-length threshold. Bracketed labels are the provider's own service tier or region.
| Host | Blended $/1M | In / Out | Context | Uptime 24h |
|---|---|---|---|---|
| Azure | $4.38 | $2.50 / $10.00 | 128K | 99.9% |
| OpenAI | $4.38 | $2.50 / $10.00 | 128K | 100.0% |
Host prices and uptime from OpenRouter, synced 2026-08-08.
Compare GPT-4o
FAQ
How much does GPT-4o cost?
GPT-4o costs $2.50 per million input tokens and $10.00 per million output tokens on OpenRouter. At a 3:1 input:output mix that blends to $4.38 per million tokens.
What is GPT-4o's context window?
GPT-4o accepts up to 128,000 tokens of context, and can generate up to 16,384 output tokens.
How good is GPT-4o on benchmarks?
GPT-4o scores 47.9% on GPQA Diamond, independently run and published by Epoch AI. 3 benchmark results are listed on this page, each with its run date and source.
Is there a cheaper model as good as GPT-4o?
Yes — 5 models in our catalogue cost less per token than GPT-4o and score at least as high on the same benchmark. The cheapest is gpt-oss-120b at $0.070 per million tokens blended.