Simon Willison has released version 0.5a0 of llm-echo, a plugin for the LLM tool that provides a "fake" model for testing purposes. This new version allows users to test against LLM versions 0.32a0 and higher, and it outputs a reasoning block to standard error before returning JSON that echoes the prompt. This update follows Willison's recent release of LLM version 0.31 and his exploration of new features in pip 26.1, such as lockfiles and dependency cooldowns. AI
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IMPACT Improves developer tooling for testing LLM integrations, potentially speeding up development cycles.
RANK_REASON This is a release of a plugin for an existing tool, not a new core model or significant industry development.