Expired50% confidenceFactExact time
Fable 5 scored 80.3 on the SWE Bench Pro programming test, while OpenAI's GPT 5.5 scored only 58.6.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 9/30/2026(expired)
Sources
Claude Fable 5 Deep Dive: An AI That Works 9 Hours Straight — Are Programmers Really Being Replaced?
bilibiliMr克劳德Claude6/11/2026
Related Claims
UnverifiedIn the Terminal Bench 2.0 benchmark, OpenAI 4.6 scored 58% and GPT 5.4 scored 75.1%.82% similarUnverifiedOn the SWE-Bench Pro programming benchmark, Claude Fable 5 leads with a score of 80%, ahead of GPT-5.6 Sol's 64.6%.78% similarUnverifiedIn the Terminal Bench 2.1 test, GPT-5.6 Ultra scored close to 92%, Fable 5 scored 88%, which are essentially on par considering the margin of error.77% similarUnverifiedGLM 5.2 scored 81 points on Terminal Bench, GLM 5.1 scored 63.5 points, GPT 5.5 scored 84 points, and Opus 4.8 scored 85 points.73% similarUnverifiedGLM-5 scored 77.8% on the SWE-Bench Verified benchmark, placing it in the top tier among open-source models.72% similar
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