Newsletter September 24, 2026
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Claude Code & agents
- No released SDK supports claude-opus-5-5: newest wheel (0.2.157) bundles CLI 2.1.277, model requires 2.1.280+
There is still no SDK that supports Claude Opus 5.5, because the current wheel contains CLI 2.1.277 while the model requires CLI 2.1.280+, meaning indie developers have to wait for an update to use the model. - Claude Opus 5.5 rejected: Claude Code 2.1.280 or newer required
Claude Opus 5.5 is rejected because Claude Code 2.1.280 or newer is required, forcing indie developers to update their code version. - Opus 5.5 requires Claude Code 2.1.280 or newer
Opus 5.5 requires Claude Code 2.1.280 or newer, which is relevant for indie developers who want to use the latest functionality.
Repos, releases & updates
- fix(claude): update spoofed cli version to 2.1.280 for Opus 5.5 support
A patch adjusts the spoofed CLI version to 2.1.280 so that Opus 5.5 works, providing indie developers with a working solution. - feat(models): add opus 5.5 without changing existing aliases
A new feature adds the Opus 5.5 model without altering existing aliases, allowing indie developers to use it without breaking their code. - feat(models): support GPT-6 Sol, Luna and Claude Opus 5.5
An update expands model support to include GPT‑6 Sol, Luna, and Claude Opus 5.5, giving indie developers more options.