Composer 2.5

Composer 2.5 is our new flagship reasoning model, tuned for long-horizon agentic tasks. It plans, calls tools, and verifies its own work across many steps.

What's new

• 30% lower median latency versus Composer 2.0
• Stronger tool-calling reliability on long traces
• Improved math, code, and structured-output accuracy

Composer 2.5 is available now in the API and powers the default agent in Caether Build.