Manifest Ships v6.9.0 at 6.8K Stars: Smart Model Router Cuts Agent AI Costs Up to 70% Across 300+ Models From 16 Providers

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Manifest (mnfst/manifest) analyzes query complexity to dynamically route agent requests to right-sized models across 300+ options from 16 providers including OpenAI, Anthropic, Google, xAI, DeepSeek, and Mistral. V6.9.0 shipped June 2 with per-query cost tracking, spending limits, and automatic failover. The cost savings mechanism is straightforward: simple queries go to cheap models, complex queries to frontier models, with the TypeScript router claiming up to 70% reduction versus always routing to flagship.