Free AI Token & API Cost Calculator: Estimate Prompt Costs
Estimate token counts, context window sizes, and API inference costs across major model tiers in real time.
Custom Model Rates ($ per 1M tokens)
Projected Inference Costs
| Model Tier | Rate (In / Out) | Single Call | Batch Cost |
|---|---|---|---|
| Frontier ReasoningDeep planning & complex logic | $3.00 / $12.00 | $0.0060 | $6.00 |
| Flagship BalancedGeneral coding & synthesis | $2.50 / $10.00 | $0.0050 | $5.00 |
| High-Speed FlashRapid search & tools | $0.15 / $0.60 | $0.0003 | $0.30 |
| Ultra-Low NanoClassification & summaries | $0.05 / $0.20 | $0.0001 | $0.10 |
| Custom PricingYour specific provider rate | $2.50 / $10.00 | $0.0050 | $5.00 |
💡 How to cut your API & prompt expenses
- Extract clean text before prompting: Don't feed raw HTML (20k–80k tokens) into your model. Use our Developer Tools or Web to Markdown API to strip script tags and noise.
- Connect lightweight tools via Model Context Protocol: Give your assistant read-only web search and DNS tools using our MCP Config Generator instead of massive bloated context prompts.
- Need structured prompt templates? Check out Stop Typing, Start Asking ($9.99 prompt playbook) for 60+ token-optimized developer prompts.
- Want saved budget presets? Unlock Avalon Pro (from $3.99/wk) to store your custom models and volume forecasts.
Budget summary copied to clipboard!
Tout ce que vous faites déjà ici reste gratuit.
À quoi sert cet outil
Paste your prompt instructions, user queries, code snippet, or payload to instantly calculate token volume, context utilization, and projected API costs across common model tiers.
- Instant Token & Character Metrics: Measures character count, word count, estimated input tokens, and estimated output tokens.
- Side-by-Side Model Tier Comparison: Compares Frontier Reasoning, Flagship Balanced, and Fast Flash tiers side by side with customizable request counts.
- Batch Cost Projection: Calculates expenses for 1 request, 1,000 requests, and custom batch volumes.
- Zero-upload privacy: Runs entirely in your browser memory without server uploads.
Comment l'utiliser
- Paste your prompt, document, or code into the input area.
- Adjust expected output tokens and request batch count.
- Review estimated token size and projected costs across tiers, or choose Custom Rates to match your exact provider invoice.
- Click Copy summary to save your budget breakdown.
Gratuit, Pro et Pro+
| Gratuit | Pro | Pro+ | |
|---|---|---|---|
| Saved presets (expected output, batch volume, custom model rates) | — | Oui | Oui |
| Qualité du résultat | Identique avec tous les forfaits | ||
| Outils serveur utilisant des crédits | Avec un pack de crédits | Avec un pack de crédits | 300 crédits par mois |
Les crédits Pro+ servent à payer les outils serveur : conversion de la parole en texte haute précision, sous-titres automatiques haute précision, voix serveur rapides, ainsi que résumés, réponses et traduction de PDF avec IA. Un pack de crédits (150 crédits, valable 12 mois) fonctionne avec n'importe quelle offre. Comparer les offres.
Utilisez-le dans votre flux de travail
- Stop Typing, Start Asking ($9.99 Prompt Playbook)60+ battle-tested prompt templates to cut prompt tokens in half and avoid costly reasoning loops.
Questions fréquentes
How are tokens counted in this calculator?
Standard language processing models estimate tokens at roughly 4 characters per token for English text and code, or 1 to 2 characters per token for non-Latin scripts. This calculator computes word count, character count, and estimated tokens in real time right in your browser.
Can I enter custom input and output pricing?
Yes. Switch the model selector to Custom Rates to type your exact provider pricing per million input and output tokens.
How does batch calculation work?
Enter the number of requests you expect to run per day or per month. The table automatically projects your single-call cost, 1,000-call cost, and full batch expense so you can budget before launching automation.
Is my text or code sent to an external server?
No. Everything runs 100% locally in your browser memory. Nothing you paste or type is stored or transmitted.