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Hermes 4 405B
nousresearch·nousresearch/hermes-4-405b·GA·Closed·hermes series
Reasoning model for deliberate analysis, multi-step problem solving, and tool use
At a glance
Reference price$1.00 / $3.00 per 1M
Cache read — · DevPass (LLM Gateway)
Lowest paid$0.996 / $2.99
Cortecs Gateway · 1× spread
Context131,072
⚠ Providers report 128,000–131,072; the table below is authoritative
Output limit131,072
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
Text
Knowledge cutoff2024-08-31
Released / updated2025-08-26 / 2026-02-04
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 4 providers4 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Cortecs | Gateway | $0.996 | $2.99 | — | — | 128,000 ⚠ | 128,000 | |
| OpenRouter | Gateway | $1.00 | $3.00 | — | — | 131,072 | 131,072 | |
| Nebius Token Factory NousResearch/Hermes-4-405B | Cloud | $1.00 | $3.00 | $0.10 | $1.25 | 128,000 ⚠ | 8,192 | |
| DevPass (LLM Gateway) | Gateway | $1.00 | $3.00 | — | — | 131,072 | 131,072 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1Nebius Token Factory$242.00
2Cortecs$348.65
3OpenRouter$350.00
4DevPass (LLM Gateway)$350.00
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
Toggle (on / off)
1 / 4 providers expose no reasoning control (reasoning_options: []).
Related models
Hermes 3 Llama 3.1 405bsame series$1.10 / $3.00Hermes Highsame series$5.00 / $25.00Hermes Lowsame series$0.25 / $1.50DeepSeek V4 Procheaper alternative$0.435 / $0.87DeepSeek V4 Flashcheaper alternative$0.14 / $0.28MiniMax-M2.7cheaper alternative$0.30 / $1.20DeepSeek V4 Flash 0731cheaper alternative$0.479 / $1.44
Price historyone sample accumulated per data sync
Input listOutput listMin blended