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Cursor cuts agent token costs 7% with leaner harness and dynamic tools

Cursor says harness changes—trimming ~66% of the system prompt, loading rarely used built-in tools on demand (the same approach that cut MCP-session tokens 46.9%), tighter prompt caching, and numbering only every tenth line—cut user token costs by 7% with no quality drop.

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AutonomyAI Discover Mode: product questions become review-ready PRs

AutonomyAI shipped Discover Mode on Sept 24, closing its Autonomous Product Delivery loop: a PM asks (or lets it suggest) what to improve, it researches analytics, tickets, calls, and the codebase, then Plan and Build open a review ready PR that matches existing components. Engineers stay the merge gate; 170+ teams including Datadog and Nielsen already run on it…

PR Newswire

Antigravity SDK adds offline agents via local Gemma 4 26B

Google’s Antigravity SDK now runs agentic workflows fully offline with LiteRT and Gemma 4 26B A4B (plus Ollama, LM Studio, or vLLM via OpenAI compatible backends). A hybrid demo keeps code on device: Gemini 3.8 Flash plans in the cloud while local Gemma instances audit and patch, with 97% of tokens staying offline…

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