o3-2025-04-16 vs gpt-5-2025-08-07 compared on cost, context window, performance, and lifecycle dates.
Green ✓ marks the model that wins each row (cheaper cost, larger window, faster).
| Attribute | OpenAI | OpenAI |
|---|---|---|
| Lifecycle state | deprecated | deprecated |
| Announced | 2025-04-16 | 2025-08-07 |
| Deprecated | — | — |
| Retirement | 2026-12-11 | 2026-12-11 |
| Input $/1M | $2 | $1.25✓ |
| Output $/1M | $8✓ | $10 |
| Blended $/1M 3:1 input:output | $3.5 | $3.44✓ |
| Context window | 200k | 400k✓ |
| Max output | 100k | 128k✓ |
| Performance | Capability class & speed are a Pro feature. Upgrade to compare performance → | |