CoThinkAI
The AI-Assisted Group Chat That Remembers and Grows With You
One shared AI for your people. It picks the right model, remembers what matters, and answers your group like a teammate that never sleeps.
Leading AI models, kept current and picked for you.
What makes CoThinkAI different
AI that just works for your group
Other AI tools are solo and silent about how they work. We handle the hard parts so you can focus on the people in the room.
We pick the model
No more guessing “is GPT or Claude better for this?” CoThinkAI routes every message to the right model. Tap Smarter Answer when you want our best.
It remembers what matters
Pin facts like allergies, budgets, and preferences. The AI carries them in every reply. As chats grow, older context is summarized automatically.
Everyone's in one thread
No screenshots. No copy-paste. Your group asks the AI together, in real time. Members join free.
The Problem
You're the AI middleman.
It's exhausting.
You research something on ChatGPT. Screenshot the answer. Text it to your partner. They have a follow-up. Repeat. Forever.
CoThinkAI puts everyone in the same AI conversation from the start. No screenshots. No copy-paste. No being the middleman.
The old way
The CoThinkAI way
Group Chat
Your whole group, one AI conversation
Everyone sees the same thread. Ask questions, brainstorm, and debate options. The AI joins in like a helpful teammate.
Permanent Memory
Heart it once. The AI remembers forever.
Tap any message to pin allergies, budgets, preferences, and schedules. The AI carries these facts in every response, so you never re-explain context.
Like pinning a note to the fridge, but the AI actually reads it.
Bookshelf Project
We only have a table saw and a drill
Pinned by Dan
Max board length from the store is 8ft
Pinned by Shannon
Mid-century style, hardwood, tapered legs
Pinned by Dan
Budget is $200 for materials
Pinned by Shannon
Heart any message and the AI remembers it.
Smart Routing
We pick the right answer, automatically
Routine question? You get a fast reply. Want a deeper answer? Tap Smarter Answer and we route to one of our top-tier models. We refresh the lineup as new models ship, so you're always on something current.
No model names. No tier menus. No “which AI should I use for this?” Just the right answer, every time.
You ask…
“What movie should we watch tonight?”
You ask…
“Walk us through how to negotiate this contract.”
Live Sync
Real-time, always in sync
Messages appear instantly for everyone. Typing indicators show who's active. Unread badges tell you what you missed. Jump into any conversation and pick up where your group left off.
Your Pace
AI when you want it. Quiet when you don't.
Pause the AI for a quick human-only sidebar. Whisper to the AI privately when you don't want to clutter the room. It catches up when you bring it back.
Personality
Set the AI's vibe per room
Each room has its own AI personality. Trip planner. Recipe helper. Tutor. Budget advisor. Or write your own. The AI shifts to match.
Change it anytime from the Lens tab.
Pricing
Simple pricing. Pay for what you use more of.
Free works for most groups. Plus and Pro give you more daily headroom, deeper web search, and more image vision, without token math or model menus.
Free
Try CoThinkAI
- 50 AI replies per day
- 3 rooms, 3 members each
- 5 image uploads per day
- Pinned Truths & smart memory
- All current fast models
Plus
For families & couples
- 250 AI replies per day
- Smarter Answer button (50/day)
- Automatic live web search
- 50 image uploads per day
- 10 rooms, 5 members each
Pro
For power users & big groups
- Unlimited AI replies
- Smarter Answer (200/day)
- Deep web search mode
- Unlimited image uploads
- Unlimited rooms, 10 members each
Only the room owner pays. Everyone you invite chats free.
Unlimited plans are subject to fair use.
Who is CoThinkAI for?
Anyone who lives, plans, or dreams with other people.
Couples
Coordinate meals, budgets, travel, and life decisions. No more copy-pasting AI answers in your texts.
Example rooms: Meal Prep, Vacation, Budget, Date Night
Families
Plan trips, manage household logistics, help with homework. One shared AI brain for the whole family.
Example rooms: Family Trip, School Help, Gift Lists, Holiday Plans
Friend Groups
Plan events, brainstorm adventures, coordinate group decisions. AI helps everyone, not just the organizer.
Example rooms: Bachelor Party, Book Club, Game Night, Group Trip
The Non-Technical
If AI feels intimidating, CoThinkAI makes it as simple as texting. No jargon, no model menus, no learning curve.
Example rooms: Dinner Tonight, Weekend Plans, Travel Ideas
Small Teams
Brainstorm, research, and problem-solve in dedicated rooms. Each room gets its own personality.
Example rooms: Brainstorm, Research Sprint, Project Alpha
AI-Curious
Try the best models without juggling subscriptions. We keep the lineup current and pick the right one for each message.
Example rooms: Research, Writing Lab, Random Q&A
Frequently asked questions
Do I have to pick a model?
No. CoThinkAI picks the right model for each message automatically. Tap Smarter Answer when you want our most capable models for a specific question. We keep the model lineup current. When providers ship new ones, we evaluate and rotate them in.
How is this different from ChatGPT or Claude?
Those are solo apps with one model each. CoThinkAI is a shared chat for your group, with smart routing across the best models from every major provider. And it actually remembers what matters: pinned facts stay in context forever.
Do my family or friends need a subscription?
No. Only the room owner needs a plan. Everyone you invite chats free.
What's a Smarter Answer?
A per-message toggle. Most questions don't need a top-tier model, and using the fastest model means quicker replies. Tap Smarter Answer when a question deserves deeper thinking. Plus and Pro plans include daily smarter-answer quotas.
What about live web search?
Plus and Pro plans get automatic live web search. The AI runs a search behind the scenes when your question needs current info. Pro adds Deep mode, which searches more aggressively. You'll see a small note on replies that used live info.
Is my data private?
Yes. Conversations are stored securely with row-level security. We don't train on your data or share it with third parties.
Can I use CoThinkAI alone?
Absolutely. Many people create personal rooms by topic. The smart memory and smart routing are great even with one person, but it really shines when you invite your people.
Ready to think together?
Create your first room in seconds. Invite your people. Let the best AI in the world help your group get things done.
No credit card required.