Use Hermes 2 Pro Llama3 8B for Free

Hermes 2 Pro Llama3 8B is an AI model released June 2024 by Nous Research, a leading organization in large language model research. Function-calling specialist — excellent at JSON mode, tool use, and structured outputs. Best for agentic workflows. With 8B and a 8K tokens context window, Hermes 2 Pro Llama3 8B is designed to excel across a range of demanding tasks — from software engineering and mathematical problem-solving to multilingual content generation and long-document analysis.

Hermes 2 Pro Llama3 8B uses a dense transformer architecture with 8B of parameters, all of which are active for every input token. Dense architectures provide predictable, consistent behavior across diverse task types — there are no "cold" experts to warm up, and quality is uniform across prompts. Nous Research's training pipeline combined large-scale pretraining on Llama 3 8B fine-tuned on Nous function-calling dataset with supervised fine-tuning and alignment techniques (RLHF or DPO), producing Hermes 2 Pro Llama3 8B's characteristic balance of capability, helpfulness, and safety.

As of 2026-10-16, Hermes 2 Pro Llama3 8B by Nous Research demonstrates measurable performance on standard AI evaluation benchmarks. On Function calling accuracy — which measures model performance on specialized evaluation tasks — it achieves 95%+. For software engineering tasks, Hermes 2 Pro Llama3 8B scores 70.4% on HumanEval, which tests ability to write correct functions from docstrings. These scores place Hermes 2 Pro Llama3 8B — at 8B of parameters — in a competitive position within its model class. Note that benchmark scores reflect controlled evaluation conditions; real-world performance varies by task, prompt design, and domain specificity.

The primary strengths of Hermes 2 Pro Llama3 8B are: Best function calling at 8B scale — purpose-tuned for reliable tool use and JSON output; ChatML format for structured multi-turn conversations; MIT license — free commercial use; Ideal for AI agents needing to call external APIs reliably. These make it particularly well-suited for AI agent frameworks requiring reliable function calling at 8B scale, Structured data extraction, API orchestration agents in production. Users working on complex, multi-step problems benefit most from Hermes 2 Pro Llama3 8B's ability to maintain coherence across long inputs and produce structured, verifiable outputs.

Like all current AI systems, Hermes 2 Pro Llama3 8B has limitations: 8K context limits complex agentic workflows; General writing quality lower than instruction-tuned Llama 3.1 8B; Knowledge cutoff June 2024. For production deployments, validating outputs against authoritative sources — especially for domain-specific or time-sensitive information — remains best practice. Nous Research continues to improve Hermes 2 Pro Llama3 8B through ongoing research.

Hermes 2 Pro Llama3 8B is available on LITHOVEX AI with a free account. Unlike direct API access — which requires billing setup, API key management, and per-token charges — LITHOVEX AI provides a seamless browser interface with no setup required, making Hermes 2 Pro Llama3 8B accessible to students, researchers, developers, and early-stage teams globally.

As of 2026-10-16, Hermes 2 Pro Llama3 8B by Nous Research demonstrates measurable performance on standard AI evaluation benchmarks. On Function calling accuracy — which measures model performance on specialized evaluation tasks — it achieves 95%+. For software engineering tasks, Hermes 2 Pro Llama3 8B scores 70.4% on HumanEval, which tests ability to write correct functions from docstrings. These scores place Hermes 2 Pro Llama3 8B — at 8B of parameters — in a competitive position within its model class. Note that benchmark scores reflect controlled evaluation conditions; real-world performance varies by task, prompt design, and domain specificity.

Dense transformer, 8B parameters, fine-tuned from Llama 3 for tool use

The training pipeline for Hermes 2 Pro Llama3 8B involves multiple stages: large-scale pretraining on Llama 3 8B fine-tuned on Nous function-calling dataset to develop broad world knowledge, followed by supervised fine-tuning on instruction-response pairs, and alignment techniques such as RLHF or DPO. Each stage refines the model's helpfulness, accuracy, and safety. Nous Research's research team — based in United States — has optimized Hermes 2 Pro Llama3 8B for the specific capability profile described above.

Inference efficiency: Hermes 2 Pro Llama3 8B at 8B is designed to deliver quality outputs at practical serving speeds. Its 8K tokens context window enables processing entire documents, multi-file codebases, and extended conversation histories — particularly valuable for contract review, technical documentation analysis, and codebase-level AI assistance.

Getting started with Hermes 2 Pro Llama3 8B on LITHOVEX AI takes under two minutes. Follow these steps:

For best results with Hermes 2 Pro Llama3 8B: provide specific, context-rich prompts; include examples when generating code; specify output format when structure matters; break complex tasks into focused sub-questions.

Nous Research is a community-driven AI research collective specializing in fine-tuning and instruction-tuning of open-weight base models. The Hermes model series — built on Llama, Mistral, and other base models — focuses on improving tool use, function calling, structured output generation, and complex instruction following. Nous Research operates as an open collaborative organization without a traditional commercial structure, publishing models and research openly. The Hermes 2 Pro series became widely adopted in the open-source agentic AI community for exceptional function-calling benchmark performance — critical for building AI agents that reliably invoke external tools and APIs.

Funding: Community-driven, open research collective

Founded: 2023, headquartered in United States.

Visit the official Nous Research website →

Hermes 2 Pro Llama3 8B by Nous Research competes in a field with several strong alternatives. Below is a detailed side-by-side comparison against commonly listed alternatives, using benchmark data and capability profiles in the catalog.

Both Hermes 2 Pro Llama3 8B and the models above are available free on LITHOVEX AI — test them side by side on your real tasks before committing to a subscription with any provider.

Hermes 2 Pro Llama3 8B is released under Llama 3 Community License / Nous Research License, which means you can download and run it on your own hardware. Below are the quickest ways to get started.

Hermes 2 Pro became the global standard for open-source function calling in 2024. AI agent builders across North America, Europe, and Asia rely on it for reliable tool use in production agentic systems where GPT-4's function calling quality was needed at open-source cost.

Hermes 2 Pro Llama3 8B by Nous Research has the following version history and notable updates:

For the complete changelog and latest release notes, visit the official Nous Research model page.