LiveBench
A Challenging, Contamination-Free LLM Benchmark
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is LiveBench?
LiveBench is a benchmark tool designed to provide challenging and contamination-free tests for language models. It helps developers and researchers evaluate the performance of their models under rigorous conditions.
Key differentiator
“LiveBench stands out as the only tool offering contamination-free benchmarks, ensuring that performance metrics are not skewed by external factors.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
API requires Python-specific patterns, TypeScript SDK is community-maintained
v0.1 to v0.2 migration required rewriting chain definitions
Primary language is Python and official support for other languages is lacking
Commercial pricing model becomes costly as the number of tests increases
Fit analysis
Who is it for?
✓ Best for
Teams needing rigorous and contamination-free benchmarking for their LLMs
Researchers comparing the performance of various language models in a controlled environment
✕ Not a fit for
Developers looking for real-time model testing (LiveBench focuses on batch processing)
Projects requiring extensive customization of benchmark tests beyond provided options
Cost structure
Pricing
Free Tier
Available
Starts at
Freemium
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Integrations
Next step
Get Started with LiveBench
Step-by-step setup guide with code examples and common gotchas.