Let It Be IT Solutions, Aurora, CO
Ask once. Get one best answer.
LettiB compares OpenAI, Claude, and Gemini models and combines them into one answer. Grok, Perplexity and more sit on the same council.
Free to start. Your question waits for you after sign up.
Ask once. The whole council answers.
LettiB sends one question to several AI models at the same time and forges one answer from all of them.
- CompareThe same prompt, several models, side by side.
- SynthesisMerges that Compare run into one answer.
- Group SynthesisDifferent jobs for several AIs, then one deliverable.
- Group ChatA thread with more than one model.
- ChatOne conversation with one model.
- Me-MicRewrites a finished answer in a saved voice. The original stays.
- NotionConnect a workspace and use it from LettiB.
- ProjectsGroup work under a project.
- Project MemoryGoals, decisions, preferences and facts build up, so every new prompt starts smarter.
One question in. One powerful answer out.
Try LettiB freeWhy a single chat window is not enough
Scattered across tabs
OpenAI, Claude, and Gemini each sit in their own window, and you lose context every time you switch.
Rate limited and tracked
Hit caps mid-workflow. Keep your keys and your data under your control.
No way to organize your best work
Great answers disappear in endless threads. Nothing compounds into a knowledge base.
How LettiB works
Three steps to a smarter AI workflow.
Ask one question
Start instantly with included credits — or connect your own API keys. No setup required.
Compare answers side by side
Send one prompt to up to 6 models in parallel on Power. Watch every response stream live.
Synthesize the best answer
Merge the strongest ideas into one authoritative answer — saved to your project forever.
What you get
Synthesis first — then compare, organize, and remember.
One final answer, built from the best of all models.
Don't pick a winner — combine them. Synthesis merges attributed insights into a single polished response you own.
OpenAI
List the tasks for the week.
Claude
Group the work by outcome.
Gemini
Mark the first step.
Combined answer
One weekly plan: the goal, the tasks that matter, and the first step.
Run one prompt across models.
Stop paying stack tax. No more tab-switching between OpenAI, Claude, and Gemini models. Run the same prompt across models, then synthesize one best answer.
Prompt · How should a weekly plan be structured?
OpenAI
Open with the goal, then list the tasks for the week.
Claude
Group the work by outcome, and note what can wait.
Gemini
Keep one short list and mark the first step.
Your AI work, organized.
Group chats, compares, and syntheses by project. Search everything. Build a library that grows with you.
Folders
Product launch
Research notes
Chats
Weekly plan
In Product launch
Model compare
In Product launch
Every project remembers what matters.
Goals, decisions, preferences, and facts accumulate automatically — so every new prompt starts smarter.
Product launch
Project memory
Goal · Ship a weekly planning workflow
Decision · Keep one combined answer
Preference · Short, neutral wording
Ask once. Get one best answer.
Compare is the starting point. Group Synthesis and Me-Mic are how a pile of model output becomes one piece of work in your voice.
Different jobs, one deliverable
Give several AIs different jobs on the same task, then merge their work into one deliverable.
How Group Synthesis worksRewrite so it sounds like you
Rewrites any LettiB output in your own writing voice from a writing sample saved in Settings → Me-Mic. Original kept. Not AI-detection.
How Me-Mic worksAsk once. Get the best of OpenAI, Claude, and Gemini models in one answer.
LettiB Pro, $15/mo.
Swipe to compare →
| Feature | LettiB Pro | ChatGPT Plus | Claude Pro | Google AI Pro |
|---|---|---|---|---|
| OpenAI, Claude, and Gemini models in one place | Y | N | N | N |
| One merged answer from several vendors' models (built in) | Y | N | N | N |
| Side-by-side answers across vendors | Y (up to 4 on Pro) | N | N | N |
| Bring your own API keys | Y (optional) | N | N | N |
| Projects / memory | Y | Y | Y | Partial (Gems and chat memory) |
| Monthly price | $15/mo, month-to-month | $20/mo (monthly only) | $20/mo or $17/mo billed annually | $19.99/mo |
Prices checked Oct 2026. Sources: help.openai.com/en/articles/6950777-what-is-chatgpt-plus, chatgpt.com/pricing, claude.com/pricing, gemini.google/subscriptions.
Your keys. Your data. Your rules.
LettiB never trains on your conversations. Your API keys are encrypted and never shared. You own everything you create, and you can export it anytime.
Simple, transparent pricing
Start with included credits, or bring your own API keys. Top up with $10 / $25 / $49 packs anytime.
Free
300 credits/month, about 25 chat messages or 2 compare runs
- Managed credits included, no API keys required
- Optional: add your own API keys
- Compare up to 2 models at once
- 5 projects
- Synthesis (10 / month)
- 7-day history
Pro Monthly
15,000 credits/month, about 1,250 chat messages or 125 compare runs
- Everything in Free
- Compare up to 4 models at once
- Unlimited projects
- Unlimited Synthesis
- Project Memory
- Unlimited history & search
Power Monthly
35,000 credits/month, about 2,916 chat messages or 263 compare runs
- Everything in Pro
- Compare up to 6 models at once
- Custom AI Teams
- Shareable synthesis links
- Priority synthesis queue
Lifetime BYOK
- Everything in Power
- Single payment — no renewals
- BYOK — unlimited providers
- Best for long-term solo power users
Credit packs
Top up managed credits on Free or paid — $10, $25, or $49.
$10
$25
$49
Workspace from $15/mo Pro, $35/mo Power, or $79 lifetime. Credit packs: $10 / $25 / $49. Use managed credits or your own provider keys.
FAQ
Do I have to bring my own API keys?+
No. Free, Pro, and Power include monthly credits so you can start immediately. Bring your own keys anytime for full control and provider-direct billing — or choose Lifetime BYOK for unlimited usage with your own keys.
Which AI providers are supported?+
OpenAI (GPT-5.6 Sol), Anthropic (Claude Opus 5.5, Claude Sonnet 5.5, Claude Haiku 5.5), Google (Gemini 3.8 Flash), Groq (GPT OSS 20B, GPT OSS 120B), DeepSeek (DeepSeek V4 Pro), Perplexity (Sonar), and xAI (Grok 4.7). Custom OpenAI-compatible endpoints work too.
Is my data private?+
Yes. Your keys are encrypted in Supabase Vault. We never train on your conversations. You own everything you create.
Can I cancel anytime?+
Pro and Power are monthly ($15/mo and $35/mo), or annual at Pro $144/yr and Power $336/yr. Cancel from the billing portal anytime. Lifetime BYOK is $79 one-time.
What is LettiB Synthesis?+
After comparing multiple models, Synthesis merges the best parts into one final answer with source attribution — like having an editor for your AI outputs.
Ready to own your AI workflow?
Compare every model, then synthesize one answer you can keep.
Start Free — No Credit Card