Join Waitlist
GAISEO Logo G lossary

Inside the page

Share this
Cosima Vogel

Definition: An open source LLM is a large language model with publicly available model weights that can be downloaded, modified, fine-tuned, and deployed freely—offering an alternative to proprietary models from OpenAI, Anthropic, and Google.

Open Source LLMs are democratizing AI access. Models like Llama, Mistral, and Falcon enable anyone to deploy AI capabilities, including RAG systems that retrieve and cite web content. For AI-SEO, this means more AI systems—not just the major players—are consuming and citing content, expanding the importance of optimization.

Major Open Source LLMs

  • Llama (Meta): Family of models from 7B to 70B+ parameters.
  • Mistral: Efficient models punching above their weight.
  • Falcon: Powerful models trained on diverse data.
  • BLOOM: Multilingual model from research consortium.
  • Gemma (Google): Smaller models derived from Gemini.

Open vs Closed LLMs

Aspect Open Source Closed/Proprietary
Access Download and deploy API only
Customization Fine-tune freely Limited/none
Cost Hosting costs only Per-token pricing
Privacy Self-hosted option Data sent to provider
Cutting Edge Usually behind Latest capabilities

Why Open Source LLMs Matter for AI-SEO

  1. Expanded Ecosystem: More AI systems accessing and citing content.
  2. Diverse Deployments: RAG systems built on open models still retrieve web content.
  3. Enterprise Adoption: Companies deploying internal AI need content sources.
  4. Specialized Applications: Domain-specific AI built on open models.

“Open source LLMs mean AI is everywhere, not just ChatGPT. Every RAG system, every AI assistant, every specialized application potentially retrieves and cites web content. The AI visibility opportunity is broader than ever.”

Implications for Content Strategy

  • Universal Optimization: Good content works across all LLMs.
  • Enterprise Visibility: Internal company AI systems use external sources.
  • Niche Applications: Specialized AI tools in your industry may cite you.
  • Platform Agnostic: Don’t optimize for one AI; optimize for retrievability.

Related Concepts

Frequently Asked Questions

Are open source LLMs as good as ChatGPT?

Frontier closed models still lead, but open models are rapidly improving. For many applications—including RAG retrieval—open models are quite capable. The quality gap is narrowing, making open source increasingly viable for production use.

Do open source models cite sources like ChatGPT?

With RAG implementation, yes. Open source models can be connected to retrieval systems just like proprietary ones. Many companies build RAG applications on open models that search and cite web content.

Sources

Future Outlook

Open source LLMs will continue improving and proliferating. This expands the AI ecosystem that consumes content, making AI-SEO increasingly important as more systems retrieve and cite web sources.