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Cursor's Composer 2.5, built on a Kimi foundation, scores near Opus 4.7 and GPT-5.5 on benchmarks at a fraction of the cost, but user reports and updated agent-focused benchmarks show mixed real-world performance.
Eric Bahn says most VCs are not using AI tools seriously; they haven't produced real software with tools like Cursor and still rely on pen and paper, creating a backward industry despite preaching AI adoption.
Eric Bahn states his firm, Hustle Fund, uses AI tools to automate deal assessment and data outreach, with his co-founders shipping code daily via Cursor to stay lean as a small AUM fund.
Eric Bahn praises Cursor's sophistication for coding, saying its feedback on inefficient code feels like senior engineer guidance and declares AGI has essentially arrived within the coding domain.
Fable 5 scored 72.9% on Cursor Bench, eight points above the previous best, but is more expensive on that cost-performance test.
Ben describes Grok Build's CLI as a polished, fast harness clearly inspired by Cursor and Claude Code, benefiting from XAI's engineering discipline.
Cursor has processed a trillion tokens, creating a data advantage public coding companies could challenge only by running new AI products at break-even.
Nathaniel Whittemore reports Cursor (now SpaceX AI) began work in April on a general-purpose agent called SAND, designed as a personal assistant for office tasks like email and spreadsheets.
Michael Kim notes early-stage investors in hot companies like Cursor or 11 Labs are encouraged to sell secondaries, but late-stage lead investors face negative signal risk if they sell.
Cursor's Composer 2.5 model ranks third on the Artificial Analysis coding agent index and operates at 10 to 60 times lower cost than high-effort Opus 47 and GPT 55 settings.
Nathaniel Whittemore points out that external benchmarks, such as Cursor Bench and Max Effort, indicate Sonnet 5 can be more expensive than Opus 4.8 or even Fable per task due to generating significantly more output tokens.
XAI proactively partnered with T3 Code, with Milo initiating outreach, to integrate the Grok CLI using the Agent Client Protocol (ACP), enabling Composer 2.5 model access outside Cursor's harness.