Claude Sonnet 5.5 vs Opus 5.5: which one to run for coding (September 2026)
Sonnet 5.5 beats Opus 5.5 on Terminal-Bench 4.0 at half the per-token price, but Opus still catch...
https://pondero.ai/coding/guides/claude-sonnet-5-5-vs-opus-5-5-september-2026/
