| Output $/MTok | $8.00 | $180.00 |
|---|---|---|
| Input $/MTok | $2.00 | $30.00 |
| Cached input $/MTok | $0.5000 | — |
| Context window | 200,000 | 1,050,000 |
| Output cap | 100,000 | 128,000 |
| Modalities | in: text, image / out: text | in: text, image / out: text |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | — |
| Family | o-series | GPT-5.4 |
| Knowledge cutoff | 2024-06-01 | 2025-08-31 |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |
| $/min | $0.003300 | $0.002150 |
|---|---|---|
| $/min batch | — | — |
| Streaming | — | ✓ |
| Realtime | — | ✓ |
| Languages | en | 56+ |
| Diarization | included | included |
| TTFW | — | — |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |
| $/1M chars | $100.00 | $22.00 |
|---|---|---|
| Voice quality | neural | neural |
| Voice cloning | ✓ included | — |
| Voice count | — | 30 |
| Languages | 70+ | en-US, zh-CN, de-DE, es-ES, fr-FR, ja-JP |
| SSML support | — | — |
| TTFB | — | — |
| Output formats | — | — |
| Verified | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ |