Bare-harness coding benchmark: Fable 5.2 best overall, Gemini 4 Carbon best value
Semantic_meaning · reddit · 2026-11-12
A Reddit user ran a coding-agent benchmark using their workbench product: each setup was just the model plus OpenCode as harness — no skills, MCP, or helper software — with a single prompt, comparing Fable 5.2, Opus 5.5 and Gemini 4 Carbon.
- Judging quality by eye, the author found Fable 5.2 did the best overall job
- But Gemini 4 Carbon produced the best code quality in readability and future extensibility, and given its price the author was so satisfied they'd feel they overpaid for Fable
- Results linked in comments for self-review
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