The newest AI models, without switching between apps.

Current flagship models

The model picker is the live source of truth because availability can change. The current lineup includes these leading model families:

• GPT-5.6Sol, Terra, and Luna, plus GPT-5.5 Thinking.
• ClaudeFable 5, Claude Sonnet 5, Opus 4.8, and Opus 4.7.
• GeminiGemini 3.5 Flash and Gemini 3.1 Pro.
• GrokGrok 4.5 and other current xAI models.
• Research modelsSonar Pro and Deep Research for source-focused work.
• More providersAdditional models from OpenAI, Anthropic, Google, Meta, xAI, DeepSeek, and others.

What you can do

• Multi-model chatSwitch models without changing your workflow.
• File and image analysisAttach supported documents or images for context.
• Web researchUse search and research modes when current sources matter.
• Study toolsTurn material into flashcards, quizzes, and explanations.
• Writing and codingBrainstorm, revise, debug, summarize, and reason through difficult work.
• Handwriting toolsRender text as customizable handwritten material.

Access designed around model cost

You can begin without creating an account and use the standard model catalog. A verified account is required for designated frontier models, and rate limits apply to protect service availability.

AI systems can make mistakes, so important facts, calculations, citations, and decisions should always be checked against reliable sources.

Frequently asked questions

Is TheOldLLM free to use?

The chat interface can be used without payment. Model access and rate limits vary by account status and may change as the service evolves.

Do I need an account?

No for standard models. A confirmed email account is required for models in the frontier tier and enables supported sync features.

Which AI models are available?

The current lineup includes GPT-5.6 Sol, Terra, and Luna; Fable 5; Claude Sonnet 5; Claude Opus 4.8 and 4.7; Gemini 3.5 Flash and 3.1 Pro; Grok 4.5; and many more. Open the model picker for the latest availability.

Is TheOldLLM affiliated with model providers?

TheOldLLM is an independent interface. Third-party model names and logos are used for identification and remain the property of their respective owners.