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Open-weights LLM family from Nous Research — the most-shipped uncensored model line in the open ecosystem. Hermes 4 (including the 405B variant) trades the safety-tuned conservatism of frontier closed models for a tool-use- and agentic-workflow-tuned generalist. Available via OpenRouter, Together, Fireworks, and locally via Ollama. The default 'open alternative' when a workload needs an LLM that won't refuse legitimate requests or leak its system prompt at the slightest pressure.
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