Overview
- Get the strongest answer from every AI model by running ChatGPT, Claude, Gemini, and Grok side-by-side, then synthesizing the best ideas into one definitive response with Compare Mode and Synthesis.
- Build a smarter project knowledge base automatically as LettiB accumulates goals, decisions, preferences, and facts into Project Memory, making every new prompt more context-aware without manual effort.
- Maintain complete data ownership and privacy with encrypted API keys and a strict no-training policy, ensuring your sensitive work never leaves your control.
- Pay only for the AI services you use directly through the Bring Your Own Keys (BYOK) model, eliminating usage markups and giving you full transparency.
- Organize all comparisons, syntheses, and chats into project folders so great responses compound into a searchable knowledge base instead of disappearing in endless threads.
- Start comparing up to 2 AI models at once with 5 projects and 10 monthly syntheses for free, scaling to unlimited usage with paid plans starting at $15/month.
Pros & Cons
Pros
- Synthesized information from models
- Connects with various providers
- Organizing with project folders
- Project memory feature
- Ownership of data
- Encrypts API keys
- Privacy-orientated
- Bring Your Own Keys
- Direct payment to providers
- No usage markup
- Ability to save syntheses
- Offers comparison of outputs
- Workspace for multiple models
- Flexible with different providers
- Allows for direct transactions
- Accumulative learning over time
- Free tier offered
- Variety of paid plans
- Running multiple prompts
- Direct links to providers
- Live response streams
- Functional comparison mode
- Generation of single answers
- Project based organization
- Searchable project content
- Growth with project library
- Automatic memory accumulation
- Full ownership of creations
- Secure privacy features
- Encrypted at rest keys
- No training on data
- Options to export/delete
- Zero markup BYOK
- Multiple pricing options
- Unlimited provider choice
- Upgrade for more models
- Shareable synthesis links
- Priority Synthesis Queue
- Priority support
- Safe key storage with Supabase
Cons
- Limited concurrent model comparison
- No collaborative features
- Lacks third-party integrations
- No mobile support
- Direct API key insertion
- Free tier limitations
- Synthesized answers manual process
- No offline functionality
- Absence of workflows automation
- Limited support options
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❓ Frequently Asked Questions
LettiB is a multi-AI workspace designed for artificial intelligence power users. The platform integrates multiple artificial intelligence models into a single interface, allowing for simultaneous run and comparison of different models' outputs. Users can organize their work by project, making browsing and searching through data easier. Privacy is a priority, with features like encrypted keys and a policy of not training with user data. Users also have full ownership over their data and results.
LettiB facilitates multi-AI integration through its design that enables concurrent operation and comparison of outputs from various AI models. Users can add AI keys from leading providers, including OpenAI, Anthropic, Google, Groq, and xAI, and work with all these models at the same time within a single workspace.
LettiB can work with various AI models, including ChatGPT, Claude, Gemini, and Grok. Users have the flexibility to add AI keys from providers such as OpenAI, Anthropic, Google, Groq, and xAI for facilitating the use of these models simultaneously.
Synthesizing ability is a core feature of LettiB. It allows users to run different AI models concurrently, compare their responses, and then synthesize the best aspects of each model's answer into one definitive response. Users can save this synthesized result for future reference.
LettiB provides a project-oriented organization feature. Within the platform, users can create project folders to group chats, compares, and syntheses. This feature ensures that great responses do not disappear in endless threads but instead compound into a knowledge base, making navigation and recovery of past work more straightforward.
Yes, LettiB allows users to connect with OpenAI. This is achieved by adding OpenAI keys to the platform, which then makes use of this connection to run and compare model outputs.
Yes, users can link LettiB to Anthropic, Google, Groq, and xAI. This can be done by adding the respective keys of these AI providers. The integration allows users to run these models concurrently and compare the results in one workspace.
LettiB prioritizes user privacy and data by implementing several features. It ensures the security of API keys by encrypting them and guarantees it does not train models with user data. Full ownership of user data and results is maintained by the user, and they have the freedom to export, delete, or leave the data at any point.
Yes, data on LettiB is encrypted. Especially, the API keys provided by the users are encrypted and rest assured never shared, amplifying the platform's security measures.
On LettiB, users retain complete ownership of their data and results. It is an essential feature of LettiB's privacy commitment, ensuring that users have the right to export, delete, or leave their data whenever they choose.
LettiB adopts an incremental learning policy where every new prompt gets smarter over time. The platform accumulates crucial project elements such as goals, decisions, preferences, and facts automatically, making the workspace adaptive and increasingly more efficient.
Yes, LettiB offers a free tier. In the free tier, users can compare up to 2 models at once, are allowed 5 projects, and can perform synthesis 10 times per month. The history of past work is maintained for 7 days.
LettiB offers a range of paid plans, which include the Pro Monthly plan for $15/month, Power Monthly for $35/month, and the Lifetime BYOK plan available for a one-time payment of $79. Each plan offers increasing levels of functionalities, such as the use of more models at once, unlimited projects, unlimited synthesis, unlimited history, and additional features. All the paid plans operate on a BYOK (Bring Your Own Keys) model.
LettiB offers a Compare Mode where users can run the same prompt across different AI models like ChatGPT, Claude, Gemini, and Grok simultaneously. The responses are visualized side by side, enabling users to grade, follow up, and iterate in a unified workspace, hence facilitating a straightforward comparison and contrast of AI model outputs.
Yes, LettiB empowers users to save synthesized answers for future reference. Synthesis merges the strongest ideas from various model output into one definitive answer, which can be stored perpetually in your project folder.
The transaction process to AI service providers is facilitated by the 'Bring Your Own Keys' (BYOK) model. Users can connect their AI keys from the respective providers. As a result, users can pay these providers directly, establishing a direct transaction process without any usage markup on LettiB's part.
LettiB's privacy features include a commitment to not train any AI models on user data. The API keys provided by the user are encrypted and never shared, ensuring secure connectivity with AI providers. The platform also guarantees complete ownership of data and results to its users, who can choose to export, delete, or leave their data at any time.
LettiB accumulates important project elements over time, thus improving with every new prompt. Features such as goals, decisions, preferences, and facts related to a project are automatically accumulated in what's referred to as 'Project Memory.' This process makes every new prompt smarter, allowing the user's workspace to evolve and adapt over time.
Yes, LettiB supports a 'Bring Your Own Keys' (BYOK) model. This model allows users to connect their API keys from preferred AI providers, thus enabling them to pay these providers directly, ensuring transparency and eliminating any usage markup.
'Compare Mode' and 'Synthesis' are two critical features of LettiB. 'Compare Mode' allows users to run the same prompt across different AI models like ChatGPT, Claude, Gemini, and Grok concurrently. They can then compare each response side by side. 'Synthesis' comes into play after the comparison step; it merges the best parts of each model's response into one final, polished answer. This synthesized answer is attributed to its source models and can be saved to the user's project permanently.
Pricing
Pricing model
Freemium
Paid options from
$15/month
Billing frequency
Monthly
Refund policy
No Refunds
