Tools

The toolkit.

The fastest, most accurate free tools for working with LLM APIs. The Token Counter is live, more are on the way.

Token Counter

Exact OpenAI token counts for GPT-5, GPT-4o and GPT-4, in your browser.

Compare real cost across GPT, Claude, Gemini and DeepSeek for your token usage.

See how your text splits into tokens across OpenAI's tiktoken encodings, with token IDs.

OpenRouter alternatives, side by side on fees, markup and OpenAI-compatibility.

Planned

Live uptime and latency for the major LLM APIs.

Planned

Verify an endpoint serves the model it claims.