# ChatGPT-4o (March 2025): AI model fact sheet

- **Provider:** openai
- **Released:** 2025-03-27
- **Context window:** 128,000 tokens
- **Parameters:** Not disclosed
- **API pricing:** $5.00 / 1M input, $15.00 / 1M output
- **OpenRouter ID:** openai/chatgpt-4o-latest
- **Capabilities:** conversation, reasoning, analysis, code-generation

An updated version of GPT-4o that feels more intuitive, creative, and collaborative. Follows instructions more accurately, handles coding tasks more smoothly, and communicates in a clearer, more natural way with more concise responses and fewer markdown levels.

## Benchmarks

| Benchmark | Score |
| --- | --- |
| MMLU | 89.5% |
| HumanEval | 92.1% |

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/chatgpt-4o-03-25