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Prompt Token Counter

Paste text and see estimated token counts and API costs across models. All counting runs locally in your browser.

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Token Estimates

Approximate counts using word-based heuristics. Load the real tokenizer for exact GPT-5.6 family counts.

OpenAI
GPT-5.6 Sol
~0 tokensIn: $0.00Out: $0.00
GPT-5.6 Terra
~0 tokensIn: $0.00Out: $0.00
GPT-5.6 Luna
~0 tokensIn: $0.00Out: $0.00
Anthropic
Claude Fable 5
~0 tokensIn: $0.00Out: $0.00
Claude Sonnet 5
~0 tokensIn: $0.00Out: $0.00
Claude Haiku 4.5
~0 tokensIn: $0.00Out: $0.00
Google
Gemini 3.1 Pro
~0 tokensIn: $0.00Out: $0.00
Gemini 3.7 Flash
~0 tokensIn: $0.00Out: $0.00
DeepSeek
DeepSeek-V4-Flash
~0 tokensIn: $0.00Out: $0.00
DeepSeek-V4-Pro
~0 tokensIn: $0.00Out: $0.00

Rows without an “exact” tag are estimates. Prices reflect public API pricing as of mid-2026 and may change.