OpenAI vs Anthropic API Cost Comparison
Side-by-side LLM API cost totals for your token mix — exact math, private in your browser.
At a glance
Enter your per-1M input/output prices for OpenAI GPT-class and Anthropic Claude-class APIs plus monthly token volumes to compare exact monthly totals, cost breakdowns and the cheaper provider for your mix. All math runs privately in your browser; no prices are pre-filled as vendor claims.
100% Private API Cost Comparison
All prices and token counts are entered by you and calculated locally in your browser. Nothing is uploaded.
Your monthly workload
Type token counts directly, or paste sample text for a heuristic starting estimate.
Your per-1M token prices (USD)
Enter rates from your own plan. Defaults below are editable examples.
Verdict for your mix
Computed from your inputs above. Badge is data-computed, never sponsored.
| Provider | Input cost | Output cost | Monthly total |
|---|---|---|---|
| Provider A (GPT-class) | — | — | — |
| Provider B (Claude-class) | — | — | — |
Delta and savings appear here after comparison.
Worked example (example inputs)
Workload 10M input + 2M output tokens. Provider A $2.50/$10.00 per 1M; Provider B $3.00/$15.00 per 1M. Computed: A $45.00 (in $25.00 + out $20.00); B $60.00 (in $30.00 + out $30.00); delta -$15.00, Provider A cheaper.
| Provider | Input cost | Output cost | Monthly total |
|---|---|---|---|
| Provider A (GPT-class) | $25.00 | $20.00 | $45.00 |
| Provider B (Claude-class) | $30.00 | $30.00 | $60.00 |
Methodology: monthly cost = (input/1M) x input-rate + (output/1M) x output-rate. Token heuristic max(chars/4, words x 1.3) is an approximation; check it against your dashboard.
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Why Use This OpenAI vs Anthropic API Cost Comparison?
How to Use OpenAI vs Anthropic API Cost Comparison
Enter your workload
Type monthly input/output token counts or paste sample text for a heuristic estimate.
Enter per-1M prices
Type each provider's USD per-1M input and output rates from your plan.
Compare and share
Read totals, breakdown, delta and cheaper-provider verdict; copy or share via URL.
OpenAI vs Anthropic monthly cost for 10M + 2M tokens
With identical 10M input and 2M output tokens, Provider A at user-entered $2.50/$10.00 per 1M totals $45.00 while Provider B at $3.00/$15.00 per 1M totals $60.00, so A is cheaper by $15.00 for this mix.
10M input tokens, 2M output tokens. Provider A: $2.50/1M in, $10.00/1M out. Provider B: $3.00/1M in, $15.00/1M out (user-entered examples).
Provider A $45.00 (in $25.00 + out $20.00); Provider B $60.00 (in $30.00 + out $30.00); delta -$15.00, Provider A cheaper.
Technical Specifications & Engine Details
| Specification | Details |
|---|---|
| Supported Formats | TOKEN-COUNTS, PER-1M-PRICES, SAMPLE-TEXT → COST-BREAKDOWN, VERDICT, CSV |
| Execution Mode | 100% Client-Side In-Browser (client) |
| Browser Requirements | Modern browser with JavaScript and HTML5 APIs enabled. |
| Performance Constraints | Runs client-side in browser memory. Token estimate is a heuristic, not a vendor tokenizer count; override with exact counts from your usage dashboard. |
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Your files remain strictly on your local device. Zero data is transmitted to external servers.
Frequently Asked Questions
Does this tool use current OpenAI or Anthropic prices?
How do I estimate monthly tokens from my text?
Is my usage data private?
Methodology
No vendor prices asserted; rankings never paid for.
Last updated .