llm 0.31 adds GPT-5.5 support and new OpenAI control options

llm 0.31 is a meaningful CLI tool update for indie developers who use OpenAI models in scripts and local workflows. It adds GPT-5.5 support plus practical controls for text verbosity and image detail, which can make experiments, automation, and cost-quality tuning easier without building custom wrappers.

[ KEY POINTS ]

Adds direct GPT-5.5 model support via llm -m gpt-5.5.
Introduces a verbosity option for GPT-5+ models, giving developers simpler output-length control from the CLI.
Adds image_detail control for image attachments, including original for GPT-5.4 and 5.5, which is useful for vision workflow tuning.
Custom models listed in extra-openai-models.yaml are now also registered as async, improving batch and automation workflows.

Originalsimonwillison.net/2026/Apr/24/llm/#atom-everythingRead original →

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llm 0.31 adds GPT-5.5 support and new OpenAI control options

// related

`Antigravity` `v2.0.0` Breakage: Staging Endpoint Misconfigured

`Antigravity` users push back on hidden compute quotas

`Antigravity` IDE and `AG2` Windows install paths collide