Fable 5.1 is the strongest coding model tested at Every, half the tokens of Opus 5

60% faster and finally writes like a normal person, making it an obvious Opus 5 replacement for anyone using it as a daily driver.

0xMarioNawfalSep 231

I ran Fable 5.1 on the crpg-bench of "Jin Yong Heroes" and it didn't feel very amazing.

I ran Fable 5.1 on the crpg-bench of "Jin Yong Heroes" and it didn't feel very amazing. There is no significant difference in IQ level between playing games and fable5/opus5/sonnet5. Jin Yong Heroes Bench is what I use to test large models in long-horizon

Han XiaoSep 240

I gave Fable 5.1, Fable 5, Claude Opus 5 and Codex the exact same prompt

Build an interactive japanese koi pond. The results surprised me. Fable 5.1 was the clear winner. The water, ripples and overall motion looked noticeably more realistic, but it did cost more than Fable 5:

DubibubiSep 21

1,001 very messy rows in a CSV file.

A single prompt with clear rules for how to handle issues. Two AI agents: claudeai with Opus 5 vs. opencode with GPT-5.6 Luna (via OpenRouter). Neither followed the instructions perfectly. One got a perfect score.

WhalesyncSep 2