One Secure Chat. Multiple AI Models. Your API Key.
Download for WindowsClick through the price button to launch the Microsoft Store for a free trial
Empowering professionals and enthusiasts who value privacy and control - to have conversations with frontier AI models like ChatGPT, DeepSeek, Gemini and Claude while minimising exposure to data breach events and information harvesting practices.
Chats are stored in-memory and disappear when you close the app, unless you save them to disk.
Encryption at Rest (on your PC)Your saved chats and API keys are encrypted and tied to your PC's unique hardware and software fingerprint, protecting your confidentiality in the event of malware, data exfiltration or use of data recovery tools against your storage device.
Better Privacy Protection (on the AI Model Provider)By using "developer" API keys with your AI model hosting provider, you're protected by stronger privacy policies with greater control of chat retention and data sharing settings. If the AI Hosting provider suffers a data breach your chats are not exposed or only minimally exposed. You're in control.
No middle man (by design)All chats are directly between you and the AI hosting provider. We do not store or have access to your encryption keys or chats.
Comes pre-configured to work with DeepInfra.com, Together.ai, Openai.com, Anthropic.com, X.ai and GoogleApis.com. Just add your own API Key
Multi-ModelComes pre-configured to chat with frontier models: DeepSeek, ChatGPT 4o, Claude 3.7, Grok 2 and Gemini 2 on the respective providers
OpenAI APIWorks with any provider local or remote compatible with the OpenAI API Spec
Comes pre-configured to chat with the most powerful AI models like ChatGPT 4o, Non-Distilled DeepSeek V3/R1 (hosted by US providers DeepInfra/Together.ai), Claude on Anthropic, Grok on X.ai and Gemini on Google. All you need to do is obtain an API access key (really just a long password) from the provider and paste into the app. In most cases a 5-min job.
Saves MoneyYou pay for the the number of tokens/words you receive and send to the AI model charged by the AI model hosting provider of your choice, and a few dollars will go a long way. LLMSymphony is free to trial and if you decide to keep it, cost less than a full meal at a fast food joint.
Modern InterfaceLLMSymphony is designed to be efficient and simple. Fast native windows interface that allows you to chat with multiple AI models in one place. You can even switch between a Primary and a Secondary model with a single button. Secondary model is for Reasoning models (like DeepSeek's DeepThink)
Prioritised ChatUnlike public consumer versions, where you may get the ocassional server busy message or that you have reached your chat limits for a more advanced models, developer API keys puts you in the priority lane or even allow you access to new AI models before general public release.
Copy and SceenshotingYou can screenshot whole conversations (useful for forums) or copy original markdown text from the AI model (useful for wikis)
Supports any OpenAI API-compatible server, including local LLM servers like ollama
Custom ConfigurationCustomize your AI model settings, such as temperature, max tokens, and top P.
API Key and Model CheckerCheck the validity of your API key and AI model availability with a single click.
We're a New Zealand-based AI startup on a mission to make privacy a priority in the age of artificial intelligence.
Our goal is to provide accessible, affordable tools that empower individuals and businesses to harness the potential of AI while safeguarding the trust and privacy of their most meaningful exchanges.