GPT-5 is OpenAI flagship model with breakthrough reasoning capabilities. It demonstrates significant improvements in mathematical reasoning, code generation, and multi-step problem solving. With a 256K context window and support for text, image, audio, and video inputs, GPT-5 is one of the most versatile models available. It powers ChatGPT and is available through the OpenAI API.
| Benchmark | Score |
|---|---|
| Arena Elo (LMArena) | 1413 |
| SWE-bench | 80.0% |
| Context Window | 256K |
Daily tokens (prompt + completion) routed to GPT-5 on OpenRouter, from Jun 20 to Aug 7, from our own stored daily snapshots. Reflects OpenRouter API demand only. See all models →
| Date | Prompt /MTok | Completion /MTok |
|---|---|---|
| 2026-07-29 | $1.25 → $0.63 | $10 → $5 |
| 2026-08-01 | $0.63 → $1.25 | $5 → $10 |
| 2026-08-07 | $1.25 → $0.63 | $10 → $5 |
| 2026-08-29 | $0.63 → $1.25 | $5 → $10 |
| 2026-09-01 | $1.25 → $0.63 | $10 → $5 |
Changes observed across 76 daily OpenRouter catalog snapshots since Jun 19, 2026.