Free tool

AI cost calculator.

Compare what the main models actually cost for your workload - with prompt caching and the batch discount done properly, which most calculators skip. No sign-up, share by link.

Prices verified 17 Jul 2026 · USD→GBP 0.7401 (16 Jul 2026) · estimates, not quotes

Pick up to 3 models

2/3
Anthropic
OpenAI
Google
or paste a sample prompt to estimate its tokensapproximate, ±10-15%
Claude Sonnet 5 is 2.5x cheaper per month than Claude Opus 4.8 for this workload.
Anthropic
Claude Opus 4.8
$60.00/ month
$0.020 / request$2.00 / day
Anthropic
Claude Sonnet 5
Cheapest
$24.00/ month
$0.0080 / request$0.800 / day

Introductory price to 31 Aug 2026, then $3/$15 per MTok.

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Estimates only. Token counts are approximate and vary by each provider's tokeniser; prompt caching and batch pricing follow each provider's published rules (Gemini caching also bills hourly storage, not modelled here). Always confirm against the provider before committing to a budget.