Last updated 07-30-2026
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Chat Stream
Chat Stream is a multi-model AI agent workspace where you chat with GPT-5, Claude 4 Sonnet, Gemini 2.5 Pro, DeepSeek, and other models from one browser tab. You can write in a Canvas editor, run HTML, JavaScript, or Python inline, upload images for review, and launch thousands of community-built GPT assistants without leaving the thread.
Most model aggregators stop at switching chatbots. Chat Stream treats the chat window like a lightweight IDE: code runs in the browser, charts and documents live in Canvas, and you can branch any message into a separate thread when you want to explore a fork without losing the original conversation. The trade-off is brand size versus depth; you get more workspace tooling in one place than a plain chat switcher, but fewer integrations than enterprise suites.
It fits indie developers prototyping snippets, product managers drafting specs, marketers testing copy variants, and students summarizing research. Teams on a budget who would otherwise juggle separate GPT, Claude, and Gemini subscriptions often use it to compare model answers side by side while keeping artifacts attached to the same session.
Switch among GPT-5, Claude 4 Sonnet, Gemini 2.5 Pro, DeepSeek R1, and Grok4 inside one chat session
Run HTML, JavaScript, and Python in the browser with output shown directly in the conversation
Browse 2,000+ community GPT assistants, many with public system prompts you can copy
Pro plan at $9.99 per month includes 3,000 basic-model chats and 1,000 advanced credits
Canvas editor for drafting documents, spreadsheets, and charts without leaving the chat
Branch any message into a new thread while the original conversation stays intact on paid plans
Bundles GPT-5, Claude 4, Gemini 2.5 Pro, DeepSeek, and other models behind one subscription instead of separate vendor plans.
In-browser code execution and Canvas keep drafts, charts, and runnable snippets attached to the same chat thread.
The GPT marketplace exposes public system prompts, which helps you learn how community assistants are structured before building your own.
Conversation branching requires a Plus or Pro upgrade; free users cannot fork threads from an existing message.
Free accounts are capped at 2 custom GPTs while heavier builders need a paid tier for more slots.
Advanced models burn 5 to 10 credits per reply, so heavy GPT-5 or o3 use can exhaust monthly allotments quickly.
Is Chat Stream free to use?
Yes, Chat Stream has a free plan at $0 for basic model access and up to 2 custom GPTs. Pro, Ultra, and Unlimited subscriptions add higher monthly quotas, advanced model credits, chat branching, and API access on the Unlimited tier.
What AI models does Chat Stream support?
Chat Stream routes basic traffic through DeepSeek V3, GLM-4.5-FLASH, GPT-4o-mini, Claude 3.5 Haiku, and Gemini 2.5 Flash. Advanced credits unlock GPT-5, GPT-4o, GPT-o3, Claude 4 Sonnet, Claude 4 Opus, Gemini 2.5 Pro, Grok4, and DeepSeek R1, with each advanced reply consuming 5 or 10 credits depending on the model.
How much does Chat Stream Pro cost?
Chat Stream Pro is $9.99 per month on monthly billing, or $7.50 per month when billed yearly with the advertised 33% discount. The Pro plan includes 3,000 basic-model conversations and 1,000 advanced model credits each month, plus Canvas, code execution, and GPT marketplace access.
Can Chat Stream run code in the browser?
Yes. Chat Stream executes HTML, JavaScript, and Python directly in the browser and displays results inside the chat. You can edit and re-run snippets without exporting to a separate IDE, which is useful for quick prototypes and data checks.
What is the Chat Stream GPTs marketplace?
The Chat Stream GPTs marketplace lists more than 2,000 community assistants you can open in one click. Each GPT can run in continuous chat mode or generator mode with a form. Most listings expose their system prompts so you can study or adapt them for your own private or public GPTs.
Does Chat Stream support conversation branching?
Chat Stream lets Plus and Pro members branch from any message to start a new thread with full context up to that point. Images, attachments, code artifacts, and timestamps carry over, while the original chat stays unchanged. Free accounts need a paid upgrade to unlock branching.
How many custom GPTs can I create on Chat Stream?
Chat Stream limits custom GPT creation by plan: free accounts can build 2 GPTs, Plus members can create 10, and Pro subscribers get unlimited GPT slots. Public GPTs go through a review step before they appear in the marketplace.