{"uid":"cap_SayVQIyMh6TVdzlR6Cqhb","slug":"llm-cost-capacity-calc-token-estimator-768f1afc","name":"LLM Cost & Capacity Calc – Token Estimator","description":"Rough LLM token estimate of text from characters and words, as a low-high range by content type. Not a tokenizer.","url":"https://llm-cost-calc.x402tookit.com/token-estimate?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["text"],"properties":{"kind":{"type":"string","description":"english (default), code, or cjk, which changes the characters-per-token assumption"},"text":{"type":"string","description":"The text to estimate (up to 20000 characters)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"kind":{"type":["null","string"]},"bytes":{"type":["null","number"]},"words":{"type":["null","number"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"tokensLow":{"type":["null","number"]},"tokensMid":{"type":["null","number"]},"characters":{"type":["null","number"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"tokensHigh":{"type":["null","number"]},"charactersPerTokenAssumed":{"type":["array","null"],"items":{"type":"number"}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KSeLV7WsS9QlnbHkWKohu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Estimates the number of LLM tokens in a text string (low/mid/high range) from character and word counts, without running a full tokenizer.","exampleAgentPrompt":"How many tokens is this text roughly? 'The quick brown fox jumps over the lazy dog. This is a sample paragraph for testing purposes.' — treat it as regular English content.","exampleUseCases":[{"title":"Pre-flight prompt token check","prompt":"Before I send this system prompt to GPT-4, give me a rough token estimate — here's the text: 'You are a helpful assistant. Your job is to answer questions about our product catalog clearly and concisely.' Treat it as English."},{"title":"Code snippet token sizing","prompt":"Estimate how many tokens this Python function will use: 'def fibonacci(n): return n if n <= 1 else fibonacci(n-1) + fibonacci(n-2)' — use the code content type so the character-per-token assumption is right."},{"title":"CJK document token estimation","prompt":"I have this Japanese text I want to send to an LLM and need a token range estimate: '本日は晴天なり。人工知能の発展は目覚ましい。' — use the CJK mode for the calculation."}],"resultDescription":"Returns a JSON object with tokensLow, tokensMid, and tokensHigh (the estimated token range), plus supporting metadata: character count, byte count, word count, the characters-per-token ratios assumed, the content kind used, a human-readable summary and disclaimer, and optional reasons or degraded/notChecked flags if the estimate quality is limited.","failureModes":["Text exceeds 20,000 character limit — request rejected","Invalid 'kind' value other than english/code/cjk — may default or error","Empty text input — may return zero or error","Very mixed-language content may produce imprecise range","Network or payment failure returning 402/503"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap token estimate without calling a full tokenizer library or LLM API. Ideal for pre-flight checks, cost planning, or agents running in environments without tokenizer dependencies. Prefer it over sibling endpoints when you need raw token count rather than cost in dollars, context-window fit, or rate-limit throughput.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:08:12.051Z","isFirstParty":false,"canonicalSlug":"llm-cost-capacity-calc-token-estimator-768f1afc"}