Astra vs Fable 5.1: Design, coding, math, and cost
Astra in Codex vs Fable 5.1 in Claude Code: hands-on design, dated benchmarks, math research, and real cost tradeoffs. Evidence checked September 9, 2026.
Works and notes by Joseph Gabito
The journal
Astra in Codex vs Fable 5.1 in Claude Code: hands-on design, dated benchmarks, math research, and real cost tradeoffs. Evidence checked September 9, 2026.
Four coding requests reached a median 94.3 tok/s each on one RTX PRO 6000. Qwen3.8-27B FP8 setup, latency results, and benchmark limits.