Claude Code Launches Sonnet 5 with Native 1M Context Window
AlexKim · x · 2026-07-22
The author shared important model updates in Claude Code version 2.1.197.
- Sonnet 5 Launch: The new version introduces the Sonnet 5 model with a native 1 million token context window, priced at $2/$10 per million input/output tokens (promotional pricing until August 31).
- Default Model Allocation: Despite the launch, the "default model" setting only applies to Free and Pro plan users. For Max, Team, and Enterprise users, the system continues to default to the Opus 4.8 model.
More from Models
- Kimi K3.1 Pro tops MathArena open models, closing frontier gap to about 6 months — teortaxesTex · 2026-10-26
- Ruff creator Charlie Marsh: frontier models find infinite bugs in any software — charliermarsh · 2026-10-26
- Dev testing one skill across Opus 5.5 and Sol 6.1 finds instruction following 'all over the map' — lucasmeijer · 2026-10-26
- supermemory unveils learner-1, claiming continual learning for any model — julianweisser · 2026-10-26
- Anthropic says Opus 5.5 cuts cost per task by ~40% vs Opus 5 — taufiqintech · 2026-10-26
- AI search APIs ranked: top 12 within 7 points, yet prices differ nearly 7x — FinanceYF5 · 2026-10-26