head to head · open source
llama_index vs neuron-ai
llama_index has 52,206 GitHub stars, 8,165 forks, 770 open issues and last shipped today. neuron-ai has 2,098 stars, 246 forks, 5 open issues and last shipped yesterday. llama_index leads on adoption by 2,388% (52,206 vs 2,098 stars). llama_index is written in Python under MIT; neuron-ai is written in PHP under MIT. llama_index has attracted 16% as many forks as stars, neuron-ai 12%. llama_index was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (agents, llm, vector-database), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| llama_index | neuron-ai | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 2.1K |
| License | MIT | MIT |
| Written in | Python | PHP |
| Last push | 2026-09-18 | 2026-09-17 |
| Forks | ⑂ 8.2K | ⑂ 246 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick llama_index if
- You weight community size — 52K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick neuron-ai if
- You want the neuron-ai feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches PHP
- You evaluated both and neuron-ai fits your workflow better
About llama_index
LlamaIndex is an MIT licensed, open source Python framework for building agentic applications — retrieval augmented generation systems, agents and multi agent workflows — on top of private documents and data, and it is aimed at AI engineers and teams who need to connect large language models to their own sources of context.
read the full llama_index overview →
About neuron-ai
Create Full Featured Agentic Applications in PHP [!IMPORTANT] Get early access to new features, exclusive tutorials, and expert tips for building AI agents in PHP. Join a community of PHP developers pioneering the future of AI development. Subscribe to the newsletter Before moving on, support the Neuron AI community giving a GitHub star ⭐️. Thank you! What is Neuron? Neuron is a PHP framework for creating and orchestrating AI Agents. It allows you to integrate AI entities into your PHP applications with a powerful and flexible architecture. We provide tools for the entire agentic application development lifecycle…
read the full neuron-ai overview →
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Frequently asked questions
Is llama_index or neuron-ai more popular?
llama_index has 52,206 GitHub stars and neuron-ai has 2,098. llama_index has the larger community by that measure.
Are llama_index and neuron-ai free?
Both are open source. llama_index is licensed under MIT and neuron-ai under MIT. Neither carries a licence fee.
What is the difference between llama_index and neuron-ai?
llama_index is written in Python and neuron-ai in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, llama_index or neuron-ai?
Choose llama_index if you want the larger community (52,206 stars) or its MIT licence terms. Choose neuron-ai if its feature set, stack or MIT licence fits better. Both are self-hostable.