LangChain vs LlamaIndex
Which LLM Orchestration AI tool is better in 2026?
LangChain
Build context-aware AI applications
LlamaIndex
Data framework and cloud for LLM applications
Side-by-side
LangChain is the more established option (raised $125M), but LlamaIndex is cheaper to start.
| Metric | LangChain | LlamaIndex |
|---|---|---|
| Taglinei | Build context-aware AI applications | Data framework and cloud for LLM applications |
| Foundedi | 2022🏆 | 2023 |
| HQi | San Francisco, US | San Francisco, US |
| Employeesi | 50-100 | 11-50🏆 |
| Neuron scorei | 61🏆 | 60 |
| Total fundingi | $125M🏆 | $27.5M |
| Latest roundi | Series B · Oct 2025 | Series A · Mar 2025 |
| Valuationi | $1.3B🏆 | — |
| Cheapest paid plani | Plus · $39/mo | Pricing not disclosed🏆 |
| Free plani | ✓ Developer | ✓ |
| Free triali | ✗ | ✓ |
| Top tier pricei | Plus · $39/mo | Pricing not disclosed |
| Pricing summaryi | 3 published plans | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for LangChain and LlamaIndex.
| Capability | LangChain | LlamaIndex |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 4 (Python, TypeScript, Go, Java) | 4 (python, typescript, go, java) |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✓ | ✗ |
| Active deal | ✗ | ✓ |
🟢 Strengths of LangChain
- Has raised more capital ($125M vs $27.5M)
- Higher Neuron score (61 vs 60)
- More mature (2022)
- Verified profile
🔵 Strengths of LlamaIndex
- Offers a free plan
- Offers a free trial
- Newer company (2023)
Which should you choose?
Choose LlamaIndex if price matters most — it starts at Free, which is friendlier for teams watching burn. Both LLM Orchestration tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose LangChain if you want the most established option — it has raised $125M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
💸 Deals
LlamaIndex Cloud free plan — 1000 pages/day
LlamaCloud free plan includes 1,000 parsed pages per day via LlamaParse — perfect for prototyping RAG pipelines.
Frequently asked questions
LangChain vs LlamaIndex — which is better?
It depends on your priority. LangChain has raised more capital and is the more established option; LlamaIndex is cheaper to start. See the side-by-side table above.
Is LangChain cheaper than LlamaIndex?
No — LlamaIndex's cheapest paid plan is Free, while LangChain's is Plus · $39/mo.
Do LangChain and LlamaIndex offer free plans?
LangChain: Yes, has a free plan. LlamaIndex: Yes, has a free plan.
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