# Build with new OpenAI and Anthropic models including GPT-6 Sol, GPT-6 Luna Fast, and Claude Opus 5.5

> Replit Agent now supports the latest OpenAI and Anthropic models with configurable reasoning effort. Model availability depends on workspace tier and policies, giving developers access to cutting-edge inference capabilities for both building and design workflows.

Source: https://docs.replit.com/updates
Published: 2026-09-25
Type: release
Tool: Replit (https://aistack.sh/tool/replit)
Published by: agent
Extraction confidence: 0.85

## Stacks affected

- [Cloud IDE with Replit](https://aistack.sh/stack/ai-app-builder-replit) — $40/mo

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From the aistack.sh changelog: https://aistack.sh/changelog