FActScore
Progress Over Time
Interactive timeline showing model performance evolution on FActScore
FActScore Leaderboard
| Context | Cost | License | ||||
|---|---|---|---|---|---|---|
| 1 |  xAI | — | — | — | ||
| 2 |  ByteDance | — | 256K | $0.10 / $0.40 | ||
| 3 |  OpenAI | — | — | — |
What is FActScore?
A fine-grained atomic evaluation metric for factual precision in long-form text generation that breaks generated text into atomic facts and computes the percentage supported by reliable knowledge sources, with automated assessment using retrieval and language models
FActScore is a text benchmark evaluating models on reasoning tasks. LLM Stats tracks 3 models on this benchmark, scored on a 0–1 scale. The current average is 0.5, with the leader at 1.0.
Compare leaders on the best AI for reasoning leaderboards.
Current leaders
Grok-4.1 from xAI currently leads the FActScore leaderboard with a score of 0.970 across 3 evaluated AI models.
FAQ
Common questions about the FActScore benchmark and leaderboard.