| GPT-5.4 Mini | Hy4 preview | |
|---|---|---|
| Input, per 1M tokens | $0.75 | $0.834 |
| Output, per 1M tokens | $4.50 | $2.50 |
| Context window | 400K | 1.05M |
| Classification or routing (600 tokens in, 10 out), per 1,000 | $0.495 | $0.525 |
| Chat reply (2,000 in, 400 out), per 1,000 | $3.30 | $2.67 |
| Retrieval-augmented answer (8,000 in, 500 out), per 1,000 | $8.25 | $7.92 |
| Confidence signal | no | no |
| Tool calling | yes | yes |
Which one should carry your traffic?
If Hy4 preview answers your requests as well as GPT-5.4 Mini, moving that traffic saves 19% on chat-shaped requests. Averages cannot tell you whether it does for your requests. Hy4 preview does not expose a confidence signal through OpenRouter, so Gimbix would test it as a full replacement rather than a first answer.
GPT-5.4 Mini profile · Hy4 preview profile · Measure it on your traffic