The ShareGPT extension shared ChatGPT conversations and is deprecated; the site recommends using built-in sharing now.
Vicuna
Fine-tune a Vicuna open chatbot model using conversations shared by users through ShareGPT.
About Vicuna
Vicuna-13B is a 13B parameter chatbot developed by LMSYS, created by fine-tuning Meta's LLaMA base model on approximately 70,000 user-shared conversations collected from ShareGPT.com. The training process included filtering low-quality or inappropriate content and adjusting training scripts to handle multi-turn conversations and long sequence inputs. Preliminary non-scientific evaluation using GPT-4 as a judge found Vicuna-13B achieves over 90% of the response quality of OpenAI ChatGPT and Google Bard, and outperforms LLaMA and Stanford Alpaca in more than 90% of tested cases. The model's training code, weights, and a public online demo are available for non-commercial use only, with a reported training cost of around $300.
Key features
- Fine-tuned LLaMA 13B base model
- Trained on 70K user-shared ShareGPT conversations
- Handles multi-turn chat conversations
- Public non-commercial online demo available
- Training code and model weights publicly released
- Preliminary GPT-4 evaluation shows high response quality
Best for: Researchers, developers, and non-commercial users seeking an alternative to commercial chatbots.
Good for
- Low reported training cost of ~$300
- Outperforms LLaMA and Alpaca in most evaluated cases
- Publicly available code, weights, and demo for non-commercial use
Watch out for
- Evaluation methodology is non-scientific and preliminary
- Only non-commercial use is permitted
- Performance claims rely on GPT-4 judgment, not rigorous benchmarks
Vicuna at a glance
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Vicuna FAQ
What base model is Vicuna fine-tuned from?
Vicuna-13B is fine-tuned from Meta's LLaMA base model.
What data was used to train Vicuna?
Approximately 70K user-shared conversations collected from ShareGPT.com.
Is Vicuna available for commercial use?
No, Vicuna's code, weights, and demo are only available for non-commercial use.
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