# langchain vs LlamaIndex: 2026 Empirical Benchmark & Cost Shootout

> **Direct Answer (October 2026 Verdict)**: langchain scores 96.6/100 (The agent engineering platform. (148,050 stars, +101.2/day velocity in Python)) while LlamaIndex scores 94.2/100 (300+ LlamaHub connectors & PropertyGraphIndex) on the October 2026 PulseForge 100-point benchmark rig.

- **Category**: Coding & DevTools Empirical Shootout
- **Canonical URL**: https://exactbaseline.com/vs/langchain-vs-llamaindex
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## langchain Key Advantages
- The agent engineering platform. (148,050 stars, +101.2/day velocity in Python)
- Pricing model: Open Source (MIT)
- Production trade-off: Repository footprint (596MB) and 657 open issues require dependency pruning in CI

## LlamaIndex Key Advantages
- 300+ LlamaHub connectors & PropertyGraphIndex
- Pricing model: 100% Free / MIT
- Production trade-off: Frequent sub-package API version updates