Paste any prompt. Instantly see what every major LLM charges to run it. Compare GPT, Claude, Gemini, Grok, and DeepSeek — side by side, no signup.
Free forever · No login · 44 models
500
100
Input tokens: 0
Output tokens: 0
Total per call: 0 tokens
All costs are estimates based on current published API pricing. Actual costs depend on prompt caching, batch discounts, token encoding differences between providers, and pricing changes. TokenLens does not charge for LLM usage — costs are billed by your provider.
Cost Comparison
Model
Tier
Cost / Run
Monthly Est.
vs GPT-4o
Select 2–5 models to compare their actual output
🔬 Output Quality Comparison
Quality comparison runs your exact prompt against real model APIs. Free tier: Claude models only (20/hour). Sign in with API keys to compare all providers.
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Paste a prompt above and hit Calculate Cost to see pricing across all major AI models.
Compare All Models — Not Just Claude
Free quality comparison runs Claude Haiku and Sonnet. Sign in and add your API keys to compare GPT, Gemini, Grok, DeepSeek, and more — side by side on your exact prompts.