Comparing GPT-5.6 and Fable 5 in Game Dev
minchoi · x · 2026-07-11
This post compares GPT-5.6 Sol and Claude Fable 5 using the same prompt. While both completed the task, GPT-5.6's output was more surprisingly refined in its "design sense":
- GPT-5.6 Sol finished the task in Devin in 70 minutes, while Fable 5 took 90 minutes in Claude Code.
- The author was "amazed" by GPT-5.6's results, noting its standout performance in similar tests.
- The focus isn't just on speed, but rather GPT-5.6's competitive edge in game build quality under identical prompts.
Related event: GPT-5.6 Series Rolls Out with Stunning Agent Capabilities(16 posts)→
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