AI Token Counter & LLM Cost Calculator
100% Client-Side • Zero Prompts Transmitted
Count tokens, compare AI model pricing, and estimate API costs across leading LLM providers. Your prompts stay in your browser—all token calculations, BPE chunk parsing, and cost modeling execute strictly client-side.
Universal AI Token Counter
Zero-latency, client-side BPE tokenization with real-time multi-model benchmarks.
Tokens (Claude Sonnet 5)
179
Ratio: 4.01 chars/token•Single Call Cost: $0.00054•Context Used: 0.09% of 200,000
Content Metrics
Characters
718
Words
94
Lines
11
Est. Read Time
26s
Comparative Token Counts Across Top Model Families:Click any model to switch active target
Context Headroom Analyzer(Claude Sonnet 5)
179 / 200,000 tokens(0.09% used • 99.91% free)
GPT-6 Astra128k
0.1%
Claude Sonnet 5200k
0.1%
Gemini 3.8 Flash1M
0.0%
Llama 4 Scout10M
0.0%
11 lines•94 words•718 characters
100% Client-Side • No server calls
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