Claude Fable 5.1 & GPT-6 Astra packages are live— install now and get the most powerful standards for your agent

performance

Frontend

Frontend performance — Core Web Vitals, bundle discipline, image and font strategy, rendering cost, and measuring on the devices users actually have.

Pick the model family

Available for 11 model families. Same engineering substance in each; the structure and the injected defenses are tuned per family.

Claude

Deepseek

Gemini

Glm

Grok

Kimi

Minimax

Mistral

Open Ai

Qwen

Sarvam Ai