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RubyLLM 2.1 adds MCP, evaluation framework and decision model support

RubyLLM 2.1 brings MCP support, an evaluation framework, OpenTelemetry tracing and support for Jev and other decision models, with the project claiming up to 58x faster performance and lower memory use.

Carmine Paolino
@paolinoArchived 23 days agoOriginally posted 2026.10.08
Carmine Paolino @paolinoOriginally posted 2026.10.08
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RubyLLM 2.1 is out now and it's missing nothing from LangChain/LangGraph/LangSmith. - Up to 58x faster and 58x less memory - Built-in MCP support with MCP Apps up to the latest spec - Support for Jev and other Decision Models - a new Evaluation framework - OpenTelemetry tracing You can have it all. The capabilities of the big Python frameworks, in a beautiful language like Ruby, integrated seamlessly into your Rails applications. http://rubyllm.com

x.com/paolino/status/2108103644105372136Archived 2026.10.09 11:22