GPT 4o
OpenAI
Key facts · verified Oct 29, 2026
GPT 4o is an OpenAI model released on 13 May 2024. Its API price is $2.50 per million input tokens and $10 per million output tokens. Its context window is 128K tokens. It ranks #228 on LMArena's text leaderboard (Elo 1346, read 2 Nov 2026). Source: developers.openai.com.
GPT 4o (gpt-4o) is a model from OpenAI with a 128K-token context window and a maximum output of 16,384 tokens. OpenAI lists API pricing of $2.50 per million input tokens and $10 per million output tokens. OpenAI's deprecations page lists the older gpt-4o-2024-05-13 snapshot for shutdown on 23 October 2026, with gpt-5.6-sol as its replacement. 1346 Elo (rank 228)
Pricing & specs checkedSource: vendor documentation · checked Oct 29, 2026LMArena: 1346 Elo (rank 228) · source · retrieved Nov 2, 2026
Full Specifications
$2.50 / $10 per million tokens | |
|---|---|
| Identity | |
| Developer | OpenAI |
| Released | May 2024 |
| Licence | Proprietary |
| Self-hostable | No |
| Cost | |
| Blended $/1M tokensinput × 0.75 + output × 0.25 | $4.375 / 1M tokens |
| Input price | $2.500 / 1M tokens |
| Output price | $10.000 / 1M tokens |
| Capacity | |
| Context window | 128K tokens |
| Max output | 16,384 tokens |
| Measured quality | |
| LMArena Elo | 1346 (checked Nov 2026) |
| LMArena rank | Rank 228 |
| Elo per dollarLMArena Elo ÷ blended $/1M tokens | 308 |