Claude Fable 5.1 & GPT-6 Astra packages are live

go-performance

Performance

Making Go fast with evidence — pprof first, allocations and escape analysis, preallocation, strings.Builder, sync.Pool where it pays, GC tuning…

Pick the model family

Available for 11 model families. Same engineering substance in each; the structure and the injected defenses are tuned per family.