| Output $/MTok | $15.00 |
|---|---|
| Input $/MTok | $2.50 |
| Cached input $/MTok | $0.2500 |
| Context window | 1,050,000 |
| Output cap | 128,000 |
| Modalities | in: text, image / out: text |
| Tool use | ✓ |
| Structured output | ✓ |
| Family | GPT-5.4 |
| Knowledge cutoff | 2025-08-31 |
| Verified | 2026-07-02 |
| Source | provider page ↗ |
| $/min | $0.004800 |
|---|---|
| $/min batch | $0.004300 |
| Streaming | ✓ |
| Realtime | ✓ |
| Languages | en, en-US, en-AU, en-CA, en-GB, en-IE, en-IN, en-NZ |
| Diarization | extra-cost |
| TTFW | — |
| Verified | 2026-07-02 |
| Source | provider page ↗ |
| $/1M chars | $50.00 | $50.00 | $50.00 | $30.00 |
|---|---|---|---|---|
| Voice quality | neural | neural | neural | neural |
| Voice cloning | ✓ included | ✓ included | ✓ included | — |
| Voice count | — | — | — | 94 |
| Languages | 31+ | 42+ | en, fr, de, es, pt, zh, ja, ko | en |
| SSML support | — | ✓ | — | — |
| TTFB | — | 90ms | 90ms | 37ms |
| Output formats | — | raw/pcm_f32le, raw/pcm_s16le, raw/pcm_mulaw, raw/pcm_alaw, wav, mp3 | — | — |
| Verified | 2026-07-02 | 2026-07-02 | 2026-07-02 | 2026-07-02 |
| Source | provider page ↗ | provider page ↗ | provider page ↗ | provider page ↗ |