| Output $/MTok | $1.25 |
|---|---|
| Input $/MTok | $0.20 |
| Cached input $/MTok | $0.0200 |
| Context window | 400,000 |
| Output cap | 128,000 |
| Modalities | in: text, image / out: text |
| Tool use | ✓ |
| Structured output | ✓ |
| Family | GPT-5.4 |
| Knowledge cutoff | 2025-08-31 |
| Verified | 2026-07-19 |
| Source | 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 | $30.00 | $17.50 | $50.00 |
|---|---|---|---|
| Voice quality | neural | neural | neural |
| Voice cloning | — | ✓ included | ✓ included |
| Voice count | — | 217 | — |
| Languages | en, es, de, fr, nl, it, ja | en, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or | en, fr, de, es, pt, zh, ja, ko |
| SSML support | — | — | — |
| TTFB | — | 200ms | 90ms |
| Output formats | wav, mp3, linear16, mulaw, alaw, opus | pcm, mp3, wav, ulaw, alaw | — |
| Verified | 2026-07-19 | 2026-07-19 | 2026-07-19 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ |