Side-by-side comparison · models
GPT-4o (2024-11-20) vs GPT-5.1 (2025-11-13)
What we have checked about each, line by line. Every value shows where it came from and when we last confirmed it.
Models
GPT-4o (2024-11-20)
The 2024-11-20 version of GPT-4o offers a leveled-up creative writing ability with more natural, engaging, and tailored writing to improve relevance & readability.
Models
GPT-5.1 (2025-11-13)
GPT model for general reasoning, writing, coding, and tool-assisted tasks.
Checked facts
Line by line
| Measure | GPT-4o (2024-11-20) | GPT-5.1 (2025-11-13) |
|---|---|---|
| Input price | $2.50 per million tokens | Not checked yet |
| Output price | $10.00 per million tokens | Not checked yet |
| Latest version | openai/gpt-4o-2024-11-20 | Not checked yet |
| Time to first token (ms) | 1,990 | 33,760 |
| Output speed (tokens a second) | 119.6 | 106.7 |
| Tokens served on OpenRouter in a day | 161.8M (for 10 Nov 2026) | Not checked yet |
| Tool calls on OpenRouter in a day | 8.1K (for 10 Nov 2026) | Not checked yet |
| Artificial Analysis Intelligence Index | 8.4 | Not checked yet |
| LMArena text rating (Elo) | 1,300 | Not checked yet |
| LMArena vision rating (Elo) | 1,137 | Not checked yet |
| Gpqa diamond | 47.9% (for 20 Nov 2024) | Not checked yet |
| Swe bench verified | 31% (for 20 Nov 2024) | Not checked yet |
| Arc agi 2 | 0% (for 20 Nov 2024) | Not checked yet |
| Aider polyglot | 18.2% (for 20 Nov 2024) | Not checked yet |
| Arc agi | 4.5% (for 20 Nov 2024) | Not checked yet |
| Cybench | 12.5% (for 20 Nov 2024) | Not checked yet |
| Frontiermath 2025 02 28 private | 0.3% (for 20 Nov 2024) | Not checked yet |
| Gdpval | 9.9% (for 20 Nov 2024) | Not checked yet |
| Geobench | 71% (for 20 Nov 2024) | Not checked yet |
| Gso bench | 0% (for 20 Nov 2024) | Not checked yet |
| Lech mazur writing | 81.8% (for 20 Nov 2024) | Not checked yet |
| Math level 5 | 49.8% (for 20 Nov 2024) | Not checked yet |
| Mmlu | 88.1% (for 20 Nov 2024) | Not checked yet |
| The agent company | 8.6% (for 20 Nov 2024) | Not checked yet |
| Vpct | 40% (for 20 Nov 2024) | Not checked yet |
| Weirdml | 25.1% (for 20 Nov 2024) | Not checked yet |
| Otis mock aime 2024 2025 | 6.3% (saturated benchmark: the top models all score near the ceiling) (for 20 Nov 2024) | Not checked yet |
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