Agree
Cursor's new composer 2.5 model is as good, if not better, than frontier models like Opus 4.7 and GPT 5.5.
After using it for several days, the author concluded it matched or exceeded the quality of top models.
Source: Cursor just crushed Claude CodeAgree
Composer 2.5 costs $0.50 per task versus $7 for Opus 4.7 on Cursor's own benchmark, making it 14 times cheaper.
The author cites Cursor's benchmark data showing a massive cost advantage.
Source: Cursor just crushed Claude CodeAgree
Composer 2.5 is much faster and runs just as good as the expensive frontier models.
Based on personal testing, the author experienced faster execution with comparable results.
Source: Cursor just crushed Claude CodeAgree
Cursor has the best agentic coding harness, objectively better than alternatives like Claude Code.
The author states that Cursor's harness is superior, giving it an edge in the agent development race.
Source: Cursor just crushed Claude CodeAgree
Using any model inside Cursor yields better results than using the same model outside because Cursor has spent more time optimizing its coding harness.
The author argues that Cursor's context engineering, system prompts, and tools make the harness more effective.
Source: Cursor just crushed Claude CodeAgree
Cursor fine-tuned its entire harness specifically around composer 2.5, not just the model.
This is presented as an additional reason why the combination yields superior results.
Source: Cursor just crushed Claude CodeAgree
Comparing Claude Code directly to Cursor with the same model and settings shows a noticeable difference due to Cursor's superior harness.
The author guarantees a noticeable improvement when running the same model inside Cursor versus Claude Code.
Source: Cursor just crushed Claude CodeNeutral
In the Artificial Analysis coding agent index, composer 2.5 is practically tied with Opus 4.7 and GPT 5.5.
Third-party benchmark results are cited to show performance parity.
Source: Cursor just crushed Claude CodeNeutral
On Terminal Bench 2.0, composer 2.5 is similar to Opus but GPT 5.5 leads significantly.
The author acknowledges that for shell-heavy work GPT 5.5 still has an edge.
Source: Cursor just crushed Claude CodeAgree
The performance gap between composer 2.5 and frontier models is only 2-3 percentage points, which is not noticeable in real-world coding.
The author downplays the small deficit to emphasize that the cost savings outweigh the marginal quality loss.
Source: Cursor just crushed Claude CodeNeutral
A coding harness is an orchestration layer that includes context management, skills, tools, and sub-agents that determine how a model behaves.
The author defines the term 'coding harness' as part of explaining Cursor's advantage.
Source: Cursor just crushed Claude CodeAgree
In a live demo, composer 2.5 generated a working collaborative whiteboard app in 3-4 minutes, while Opus 4.7 took over 15 minutes and produced a broken app.
The author timed a side-by-side test showing composer 2.5's speed and reliability advantage.
Source: Cursor just crushed Claude CodeNeutral
GPT 5.5 took about 10 minutes to generate a functioning whiteboard app, faster than Opus but slower than composer.
The author reports the timing of the GPT 5.5 run as an objective observation.
Source: Cursor just crushed Claude CodeAgree
The app generated by composer 2.5 used TypeScript and React, resulting in better structure, while Opus produced pure JS/CSS without React.
Code quality comparison shows composer 2.5 chose a more modern, maintainable stack.
Source: Cursor just crushed Claude CodeNeutral
GPT 5.5 produced more maintainable code with TypeScript, React, shared types, and automated testing compared to the other models.
The author acknowledges GPT 5.5's stronger code structure, despite it being slower and more expensive.
Source: Cursor just crushed Claude CodeAgree
Overall, the author found composer 2.5 to be the best in terms of speed and initial function, even over GPT 5.5.
The author concludes that composer 2.5 gave the most impressive result for its cost and execution time.
Source: Cursor just crushed Claude Code