GPT-5.6 reads the code while Fable 5 keeps probing MCP calls until it works
Angaisb_ · x · 2026-07-23
The poster says they’re testing an MCP setup and seeing very different behaviors from the models.
- GPT-5.6 reportedly starts reading and reverse-engineering the code in an attempt to fix the issue.
- Fable 5 instead keeps making repeated MCP calls and experimenting until it eventually works.
The contrast highlights two distinct agent styles: one that reasons through the codebase, and one that probes the environment iteratively.
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