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HealthBench Professional
Reasoning
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Results for 17 models collected from 7 public sources.
Ranking
Sources
#
Model
Score
1
Claude Fable 5
Anthropic
66.0
%
2
Claude Opus 5.5
Anthropic
65.6
%
3
Claude Mythos Preview
Anthropic
64.7
%
4
GPT-6 Astra
OpenAI
63.4
%
5
Claude Fable 5.1
Anthropic
62.1
%
6
GPT-5.6 Sol
OpenAI
60.5
%
7
Claude Opus 5
Anthropic
59.8
%
8
Muse Spark 1.1
Meta
59.3
%
9
GPT-5.6 Terra
OpenAI
57.7
%
10
Claude Opus 4.8
Anthropic
57.4
%
17 models total
1
2