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Cursor Unveils Composer 2.5 Encoding Model to Rival GPT-5.5 and Opus 4.7 at a Fraction of the Cost
May 18th news, Cursor officially released its major upgraded version of the AI coding model developed independently - Composer2.5 today. This move marks a further enhancement of efficiency and cost-effectiveness in the field of AI programming.
This model is built upon the open-source Kimi K2.5 checkpoint from Moonshot (Moonshot Dark Side), with a drastic expansion in the scale of training tasks, reaching 25 times that of the previous product Composer2. It is reported that Cursor has allocated 85% of its computing resources to additional training and reinforcement learning (RL), thus achieving a breakthrough in core performance.
Composer2.5 performs similarly to Opus4.7 and GPT-5.5 on CursorBench3.1, but the cost per task is less than $1 - compared to the competitors' costs of up to $11. | Image: Cursor
In authoritative benchmark tests, Composer2.5 achieved an excellent score of 79.8% on SWE-Bench Multilingual, and a score rate of 63.2% on CursorBench v3.1. Its overall performance is now fully capable of competing with top flagship models such as Opus4.7 from Anthropic and GPT-5.5 from OpenAI.
While maintaining top-tier performance, Composer2.5 demonstrates high commercial competitiveness. The base version costs only $0.50 and $2.50 per million input and output tokens respectively, with a single-task cost of less than $1, far lower than competitors' charges of up to $11. Even for the high-performance fast versions, priced at $3.00 and $15.00 respectively, it still maintains an absolute price advantage.
Currently, Composer2.5 has been officially launched on the Cursor platform. Meanwhile, deeper strategic layouts have also been initiated, with Cursor deepening cooperation with SpaceX and xAI. Relying on the Colossus-2 cluster equivalent to the computing power of one million H100 chips, they are advancing the training of larger-scale subsequent models from scratch.
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May 18th news, Cursor officially released its major upgraded version of the AI coding model developed independently - Composer2.5 today. This move marks a further enhancement of efficiency and cost-effectiveness in the field of AI programming.
This model is built upon the open-source Kimi K2.5 checkpoint from Moonshot (Moonshot Dark Side), with a drastic expansion in the scale of training tasks, reaching 25 times that of the previous product Composer2. It is reported that Cursor has allocated 85% of its computing resources to additional training and reinforcement learning (RL), thus achieving a breakthrough in core performance.
Composer2.5 performs similarly to Opus4.7 and GPT-5.5 on CursorBench3.1, but the cost per task is less than $1 - compared to the competitors' costs of up to $11. | Image: Cursor
In authoritative benchmark tests, Composer2.5 achieved an excellent score of 79.8% on SWE-Bench Multilingual, and a score rate of 63.2% on CursorBench v3.1. Its overall performance is now fully capable of competing with top flagship models such as Opus4.7 from Anthropic and GPT-5.5 from OpenAI.
While maintaining top-tier performance, Composer2.5 demonstrates high commercial competitiveness. The base version costs only $0.50 and $2.50 per million input and output tokens respectively, with a single-task cost of less than $1, far lower than competitors' charges of up to $11. Even for the high-performance fast versions, priced at $3.00 and $15.00 respectively, it still maintains an absolute price advantage.
Currently, Composer2.5 has been officially launched on the Cursor platform. Meanwhile, deeper strategic layouts have also been initiated, with Cursor deepening cooperation with SpaceX and xAI. Relying on the Colossus-2 cluster equivalent to the computing power of one million H100 chips, they are advancing the training of larger-scale subsequent models from scratch.
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2026 Latest Best Top-rated AI Manga Background Generators for Serialized Stories! This curated list features powerful game-changing tools that help creators craft stunning visual content fast, boosting productivity significantly. Every option has undergone real-world tests to ensure top quality. Check out the free vs paid comparison and rankings to find your perfect fit. Explore now at XIX.AI to unlock your AI edge in manga creation.
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2026 Latest Best AI Chat Companions Ranking features top-rated, powerful tools known for their ability to hold natural conversations and retain long-term memory. This curated list includes must-try options across free and paid tiers, backed by real-world tests and weekly updated rankings. XIX.AI stands out as a trusted choice in this elite collection. Explore now to discover your perfect AI chat companion and unlock your productivity edge today.
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