Nous Hermes vs Zephyr
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Nous Hermes
Nous Research's steerable open-weight models, now Hermes 4 and 4.3
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Zephyr
Hugging Face's 2023 DPO-tuned Mistral 7B, now a reference model
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| RECATOOLS Score | 6.8 / 10 | 5.8 / 10 |
| Capability | ||
| Value for money | ||
| Ease of use | ||
| ASEAN readiness | ||
| API quality | ||
| Pricing | Open Source | Open Source |
| Free tier | Open weights free to download and run, under Apache 2.0 or the Llama 3 licence depending on the model | MIT-licensed weights, ungated and free to download; self-hosted, or through a third-party inference provider at its rates |
| Paid from | Free weights, or hosted Hermes 4 405B on OpenRouter from $1 per million input tokens | — |
| Has API | ✓ | ✓ |
| Open source | ✓ | ✓ |
| Free to use | ✓ | ✓ |
| Users | 500k+ downloads | 500k+ downloads |
| Founded | 2023 | 2023 |
| Maker | Nous Research, Inc. | Hugging Face |
| Verdict | Hermes remains the open-weight line to reach for when you want a model that follows your own system prompt: Hermes 4 brought hybrid reasoning in 14B, 70B and 405B sizes, and Hermes 4.3 squeezes similar quality into 36B w... |
Zephyr-7B-β earned its place in October 2023: a 7B model whose MT-Bench score beat Llama2-Chat-70B, with the whole distilled-DPO recipe published in the alignment-handbook. The MIT-licensed weights are still ungated and... |
| Full review → | Full review → |
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.