vCX-Hard - Non-Hallucination: leaderboard
Metric: Non-Hallucination Rate (%). Source: www.retellai.com. 27 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.5 | 84.8 |
| 2 | GPT-5.4 | 83 |
| 3 | Gemini 3.1 Pro (Preview) | 82.6 |
| 4 | GPT-5.2 | 81.3 |
| 5 | Claude Sonnet 4.6 | 81.2 |
| 6 | GLM-5.1 | 79.3 |
| 7 | GPT-5.1 | 75.7 |
| 8 | Gemini 3.1 Flash Lite | 74.4 |
| 9 | Gemini 3 Flash | 73.8 |
| 10 | GPT-4o | 72.8 |
| 11 | Claude Haiku 4.5 | 72.4 |
| 12 | Gemini 2.5 Pro | 72.3 |
| 13 | Gemini 3.5 Flash | 72 |
| 14 | GPT-4.1 | 71.5 |
| 15 | Claude Sonnet 4.5 | 71.5 |
Interactive version: theaggregate.ai/benchmark?slug=vcx-hard-non-hallucination · How It Works · Data refreshed daily, snapshot 2026-09-21.