The seven-step problem you didn't know you had
Every time you ask AI for help on your phone, you do this: copy → leave iMessage → open ChatGPT → re-paste → re-prompt → copy back → switch → send. Seven steps. 60–90 seconds. Multiple times a day.
In Chrome? Same loop in tabs. On Apple Watch? You just give up and pull out your phone.
We're done with that.
What Inthread is
Inthread is one AI assistant that lives natively on the three surfaces you already type on:
· iMessage keyboard extension — tap once from your keyboard, get a drafted reply, edit, send. Never leave the thread. · Apple Watch app — the first AI keyboard built natively for the wrist. Glance, dictate, send. Phone stays in your pocket. · Chrome extension — highlight any text, right-click, get an AI reply. Works in Gmail, Notion, Google Docs, Linear, any text field on the web.
Same prompt history. Same model preferences. Same BYOK keys. Across all three.
Four frontier model providers, one interface
Pick the right brain for the moment:
· Claude (Opus, Sonnet, Haiku) — for nuanced writing and long-form replies
· GPT-4o, 4o-mini, o3, o4-mini — for fast, conversational drafts
· Gemini 2.5 Pro / Flash, 2.0 Flash — for research and grounded answers
· Grok 3 & Grok 3 mini — for real-time web access and direct, no-hedging replies
Switch models per message. Set defaults per surface. Never feel locked in again.
Bring Your Own Key (BYOK), zero markup
Already paying for Claude Pro, ChatGPT Plus, Gemini Advanced, or xAI? Drop your API keys in and use the models you already pay for — at cost, no platform markup, ever. We don't want to be in the AI resale business. We want to be the best client.
Built for the people whose reply speed is their edge
· Agency operators replying to client texts from the gym · Founders drafting investor responses on a walk · Knowledge workers killing tabs with one shortcut · Sales pros writing 30 personalized replies before coffee · Multilingual professionals reading and replying in 50+ languages without ever opening Translate · Apple Watch obsessives who finally have a real AI workflow on the wrist
Why Inthread is different
There are AI keyboards. There are AI browser extensions. There are AI watch apps. There is no other product that ships all three with the same brain, the same models, the same keys, and the same BYOK philosophy. We don't make you pick a surface — we follow you across the ones you already use.
Privacy by design
Inthread only processes what you explicitly send to AI. Your message history never leaves your device without your direct action. Your keys are stored locally and never proxied through our servers when you BYOK.
Pricing
· Free tier with daily AI credits across all three surfaces · Pro tier with higher limits, advanced models, and Watch unlocked
· Bring Your Own Key — use any model at cost, zero markup, on any plan
Try it
Visit www.inthread.ai and sign up for our waitlist for early access. Email [email protected] for any support.
If you've ever lost a thread because you alt-tabbed to ask AI for help — this is for you.
