# Kimi Hallucination Benchmark Hard with tools (Internal) (Kimi Hallu Bench Hard (tools))

> The hard split of Moonshot AI's internal factuality benchmark, run with tools and scored as the claim-level hallucination rate.

Canonical page: https://benchlm.ai/benchmarks/kimihallubenchhardtools

- Category: [Agentic](/agentic)
- Last updated: October 29, 2026

## About Kimi Hallu Bench Hard (tools)

- Year: 2026
- Tasks: Hard internal work-task prompts with tools
- Format: Claim-level hallucination rate
- Difficulty: Factuality stress test
- Paper: [Kimi K3.1 Pro Tech Blog: Advancing Open Intelligence](https://www.kimi.ai/blog/kimi-k3-1-pro)

Fact-checking agents judge each factual claim; lower is better. Moonshot describes the set as a deliberately adversarial stress test. BenchLM stores the provider-published internal benchmark value as display-only launch evidence and does not treat it as an independently reproducible score.

Kimi Hallu Bench Hard (tools) is currently displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.

## Leaderboard (1 models)

| Rank | Model | Creator | Score |
|------|-------|---------|-------|
| 1 | [Kimi K3.1 Pro](/models/kimi-3-1-pro) | Moonshot AI | 8.3% |

## FAQ

### What does Kimi Hallu Bench Hard (tools) measure?

The hard split of Moonshot AI's internal factuality benchmark, run with tools and scored as the claim-level hallucination rate.

### Which model scores highest on Kimi Hallu Bench Hard (tools)?

Kimi K3.1 Pro by Moonshot AI currently leads with a score of 8.3% on Kimi Hallu Bench Hard (tools).

### How many models are evaluated on Kimi Hallu Bench Hard (tools)?

1 AI models have published results on Kimi Hallu Bench Hard (tools) in the BenchLM catalog.

### Does Kimi Hallu Bench Hard (tools) affect BenchLM's overall score?

Not directly. Kimi Hallu Bench Hard (tools) is still displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.