Vals AI Tax Agent Bench: leaderboard
Metric: Accuracy (%). Source: www.vals.ai. 18 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Fable 5.1 (Max) | 77.64 |
| 2 | Claude Opus 5 (Max) | 75.06 |
| 3 | GLM-5.3 (Max) | 73.09 |
| 4 | Muse Spark 1.3 (xHigh) | 71.93 |
| 5 | Grok 4.6 (High) | 70.79 |
| 6 | Kimi K3 (Max) | 68.67 |
| 7 | GPT-5.6 Sol (Max) | 67.95 |
| 8 | Gemini 3.8 Flash (High) | 66.77 |
| 9 | Qwen 3.8 Max | 65.96 |
| 10 | GPT-5.6 Terra (Max) | 65.2 |
| 11 | GPT-6 (Max) | 63.34 |
| 12 | Claude Sonnet 5 (Max) | 62.27 |
| 13 | GPT-5.6 Luna (Max) | 60.81 |
| 14 | GPT-5.5 (xHigh) | 60.46 |
| 15 | DeepSeek V4 Pro (0813) (Max) | 58.66 |
Interactive version: theaggregate.ai/benchmark?slug=vals-ai-tax-agent-bench · How It Works · Data refreshed daily, snapshot 2026-09-08.