GPT-4o is OpenAI versatile multimodal model that processes text, image, audio, and video natively. At $2.50/$10 per MTok with a 128K context window, it balances capability and cost for most use cases. GPT-4o powers the ChatGPT interface and supports real-time audio conversation, making it the most accessible frontier model for consumers.
| Benchmark | Score |
|---|---|
| Arena Elo (LMArena) | 1404 |
| Context Window | 128K |
| Price (input/output) | $2.50/$10 |
Daily tokens (prompt + completion) routed to ChatGPT-4o on OpenRouter, from Jun 20 to Jul 3, from our own stored daily snapshots. Reflects OpenRouter API demand only. See all models →
| Date | Prompt /MTok | Completion /MTok |
|---|---|---|
| 2026-08-07 | $2.5 → $1.25 | $10 → $5 |
| 2026-08-29 | $1.25 → $2.5 | $5 → $10 |
| 2026-09-01 | $2.5 → $1.25 | $10 → $5 |
Changes observed across 76 daily OpenRouter catalog snapshots since Jun 19, 2026.