Feature

Multiple model providers

Pick the model. It actually stays the model.

One place, multiple providers

Choose from OpenAI (GPT‑4o, GPT‑4.1, GPT‑5, o‑series), Anthropic (Claude), Google (Gemini), xAI (Grok), and Echo—right from the composer.

Your choice applies for the whole chat. No hidden routing, no surprise downgrades, no “we switched you to something else.” You pick; we stick to it.

Providers and model families

BasePremiumPremium +

ChatGPT

gpt-4o series

GPT-4o · May 2024
GPT-4o · Aug. 2024
GPT-4o · Nov. 2024
GPT-4o
GPT-4o mini

gpt-5.1 series

GPT-5.1

gpt-5 series

GPT-5
GPT-5 codex
GPT-5 chat latest
GPT-5 mini
GPT-5 nano

gpt-4.1 series

GPT-4.1
GPT-4.1 mini
GPT-4.1 nano

o-series

o3
o4 mini
o3 mini

GPT OSS

GPT OSS 120b
GPT OSS 20b

Claude

Claude Opus 4.6
Claude Opus 4.5
Claude Sonnet 4.6
Claude Sonnet 4.5
Claude Haiku 4.5

Gemini

Gemini 2.5 Series

Gemini 2.5 Pro
Gemini 2.5 Flash
Gemini 2.5 Flash-Lite

Gemini 3 Series

Gemini 3 Pro Preview
Gemini 3 Flash Preview

Gemini 3.1 Series

Gemini 3.1 Pro Preview

Grok

grok-3

Grok-3
Grok-3 Mini

grok-4

Grok-4 Fast Reasoning
Grok-4 Fast Non-Reasoning

grok-4.1

Grok-4.1 Fast Reasoning
Grok-4.1 Fast Non-Reasoning

grok-code

Grok Code Fast 1

DeepSeek

DeepSeek v3.1
DeepSeek v3.2

Moonshot

Kimi

Kimi K2 Thinking
Kimi K2.5

just4o.chat

just4o.chat model

Echo
Echo mini

Transparent access and cost

Premium badges and cost hints show what each model uses before you send. New chats inherit your last selection so your workflow stays consistent.

Access varies by tier: Explorer gets base models, Builder unlocks Premium, Studio and Aurora unlock Premium+.

We pass through provider pricing and link to rate cards where relevant so cost‑per‑message math is clear.