Hermes 4 405B vs Hy4
Price, context window & benchmark comparison
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Verdict: Hy4 is 2.4× cheaper than Hermes 4 405B on a typical 3:1 input/output mix. Hy4 has the larger context window (1M vs 131K).
| Hermes 4 405B | Hy4 | |
|---|---|---|
| Input price / 1M | $1.00 | $0.42 |
| Output price / 1M | $3.00 | $1.25 |
| Blended price (3:1) | $1.50 | $0.63 |
| Cached input / 1M | $0.20 | $0.021 |
| Context window | 131K | 1M |
| Max output | 118K | 66K |
| Intelligence index | — | 34.6 |
| Coding index | — | — |
| Providers | — | 1 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | No | Yes |
| Reasoning | Yes | Yes |
| Tool calling | No | Yes |
| Released | 2025-08-26 | 2026-11-04 |
| Retirement | — | — |
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FAQ
Which is cheaper, Hermes 4 405B or Hy4?
Hy4 is 2.4× cheaper than Hermes 4 405B on a typical 3:1 input/output mix.
Hermes 4 405B vs Hy4: which has a bigger context window?
Hermes 4 405B: 131,072 tokens. Hy4: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Hermes 4 405B ≈ $3,500, Hy4 ≈ $1,459.
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