# Build with new OpenAI and Anthropic models

By Steven Van · 2026-09-25

Replit Agent adds GPT-6 Sol, GPT-6 Luna Fast, and Claude Opus 5.5, with access varying by plan tier and Workspace policy.

[Replit](<https://creatorstoolbox.com/tools/replit>) Agent's [model selector](<https://docs.replit.com/features/agent/model-selector>) now includes GPT-6 Sol, GPT-6 Luna Fast, and Claude Opus 5.5 for building and designing. Choosing a model manually is available to Core and Pro builders in Power or Max mode, the Fast variant requires Pro or Enterprise, and overall availability still depends on a Workspace's model policies.

![Agent modes popover showing Free, Power, and Max modes with Power selected, a Primary model list including GPT-5.6 Luna Fast and Claude Sonnet models, and an Ef](<https://mintcdn.com/replit/8n5zRimolc5vR2T4/images/replitai/model-selector-power-mode.png?fit=max&auto=format&n=8n5zRimolc5vR2T4&q=85&s=f5fe07a7e4827ae15077037eae569ea2>)

Power Mode in the Agent modes popover, with the Primary model list and Effort slider.

![Agent modes popover showing Free, Power, and Max modes with Max selected, a Primary model list including Claude Fable 5, Claude Opus 5, GPT-5.6 Sol, and Kimi K3](<https://mintcdn.com/replit/8n5zRimolc5vR2T4/images/replitai/model-selector-max-mode.png?fit=max&auto=format&n=8n5zRimolc5vR2T4&q=85&s=92890cdf6fa9b9351b16fd79e0268e31>)

Max Mode's model list, which includes Kimi K3.

![The Primary model list with Claude Fable 5 selected and the Effort slider set to Medium, described as balanced reasoning for everyday tasks](<https://mintcdn.com/replit/sqRlxd9s0NgB8li3/images/replitai/model-selector-effort.png?fit=max&auto=format&n=sqRlxd9s0NgB8li3&q=85&s=6f200aa287939072136a8edeb7102b60>)

The Effort slider below the model list, set to Medium.

![Replit](<https://creatorstoolbox.com/images/replit-icon.png>)

Replit

Browser-based IDE for 50+ languages with AI coding assistance, multiplayer editing, and instant deployments — zero setup, integrated hosting.

[View Replit →](<https://creatorstoolbox.com/tools/replit>)

[Read the original announcement →](<https://docs.replit.com/features/agent/model-selector>)

[Read Build with new OpenAI and Anthropic models on Creators Toolbox](<https://creatorstoolbox.com/blog/replit-build-with-new-openai-and-anthropic-models>)

---
Canonical source: https://creatorstoolbox.com/blog/replit-build-with-new-openai-and-anthropic-models