| Output $/MTok | $10.00 | $15.00 | $10.00 |
|---|---|---|---|
| Input $/MTok | $1.25 | $2.50 | $2.50 |
| Cached input $/MTok | $0.1250 | $0.2500 | $1.2500 |
| Context window | 400,000 | 1,050,000 | 128,000 |
| Output cap | 128,000 | 128,000 | 16,384 |
| Modalities | in: text, image / out: text | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ | ✓ |
| Structured output | ✓ | ✓ | ✓ |
| Family | GPT-5 | GPT-5.4 | GPT-4o |
| Knowledge cutoff | 2024-09-30 | 2025-08-31 | 2023-10-01 |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |
| $/1M chars | $30.00 | $50.00 | $22.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | — | ✓ included | — |
| Voice count | 94 | — | 30 |
| Languages | en | 31+ | en-US, zh-CN, de-DE, es-ES, fr-FR, ja-JP |
| SSML support | — | — | — |
| TTFB | 37ms | — | — |
| Output formats | — | — | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |