Heuristic: tokens ≈ ceil(word count ÷ 0.75). Rule-of-thumb B (Latin-heavy): ceil(characters ÷ 4) — shown as “Char÷4” below; not used for $ unless you add an advanced toggle later.
Shortcuts: Ctrl+Enter (Windows/Linux) or Cmd+Enter (Mac) copies estimated tokens.
Counts
Words0
Est. tokens0
Char÷40
Characters0
Lines0
UTF-8 bytes0
Reading time0 min~200 wpm English
Why your bill can be higher
- Hidden system prompts, tool definitions, and JSON the model never shows you.
- Retries, multi-step agents, and long tool results.
- Cached-input discounts (or lack thereof) — see the AI cost calculator for monthly + cache % ideas.
Monthly totals: cloudaxisai.github.io/ai-cost-calculator · cloudybot.ai/pricing for CloudyBot caps.
Optional reply cost
Default is prompt (input) tokens only. Model reply using either fixed output tokens or % of input — never both.
0%
List-price cost for this paste
| Model | Prompt $ | Output $ | Total $ |
|---|
Mini glossary
- Est. tokens — word-split heuristic for English-ish prose; production bills use each vendor’s tokenizer.
- Prompt $ — estimated input tokens × public input $/1M.
- Output $ — estimated reply tokens × public output $/1M (zero if “prompt only”).
- Total $ — prompt + output for this single paste scenario (not a monthly subscription quote).
What we did not model
- CJK / mixed-script tokenization, images/audio, tool-use overhead, batch discounts, enterprise deals, tax, FX.
- Exact context-window fit — API tiers vary.