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Composer 2.5

3 articles · Page 1 of 1

Machine Learning Algorithms & Natural Language Processing

May 20, 2026 · Artificial Intelligence

Composer 2.5 Narrows the Gap to Claude Opus 4.7 with Ten‑Fold Cost Savings

Composer 2.5, the latest AI‑coding model from Cursor, claims near‑par performance with Claude 4.7 Opus and GPT‑5.5 while delivering up to ten‑times higher efficiency and a pricing model of $0.5 per M input tokens and $2.5 per M output tokens, backed by novel reinforcement‑learning tricks, massive synthetic data, and a custom Muon optimizer with dual‑grid HSDP architecture.

AI programmingComposer 2.5Cost Efficiency

0 likes · 13 min read

Composer 2.5 Narrows the Gap to Claude Opus 4.7 with Ten‑Fold Cost Savings

AI Insight Log

May 19, 2026 · Artificial Intelligence

Cursor Returns with Composer 2.5: Openly Built on Kimi, 10× Lower Cost, Musk Endorses

Cursor unveiled Composer 2.5, reporting benchmark scores comparable to Opus 4.7 and GPT‑5.5, a ten‑fold cost reduction, explicit use of Moonshot’s Kimi K2.5 as a base, new RL training techniques, and a partnership with SpaceXAI that multiplies compute power, all highlighted by Elon Musk’s retweet.

AI modelComposer 2.5Cost Efficiency

0 likes · 10 min read

Cursor Returns with Composer 2.5: Openly Built on Kimi, 10× Lower Cost, Musk Endorses

Machine Heart

May 18, 2026 · Artificial Intelligence

Composer 2.5 Delivers Opus‑level Performance at One‑Tenth the Cost

Composer 2.5, Cursor’s latest LLM, matches Claude Opus 4.7‑level capabilities while costing roughly one‑tenth as much, thanks to larger training scale, precise text‑feedback reinforcement learning, 25× more synthetic tasks, and a new Muon‑HSDP optimizer that boosts efficiency up to ten‑fold.

Composer 2.5Cost EfficiencyLLM

0 likes · 9 min read

Composer 2.5 Delivers Opus‑level Performance at One‑Tenth the Cost