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Hermes 4 - Llama-3.1 70B

Open weights

Nous Research's mid-size hybrid-reasoning post-training of Llama-3.1-70B with switchable <think> mode and JSON-schema-faithful outputs.

Publisher
Nous Research
Family
Hermes
Params
70B
Context
131K
Input
Output
Released
27 Aug 2025

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Notes

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Attribution

Benchmark scores
AA
Attribution policy →
Context
131K
Input
$0.13
/1M tok
Output
$0.40
/1M tok
Blended
$0.20
#240/ 461/1M · 3:1
Speed
94
#64/ 461tok/s

Price & speed via Artificial Analysis · ranked across tracked models

Reasoning effortIndexSpeed
Reasoning9.992 t/s
Non-reasoning6.794 t/s

Intelligence Index per reasoning-effort setting, via Artificial Analysis · pricing identical across tiers

Reported on 9 evals across 6 domains - best 66.4% on MMLU-Pro · #179 of 340

Reported eval scores

9

Introduced in

paperHermes 4 Technical Report