Token & Cost Calculator API
Category: developer
Estimate token counts and API costs across AI providers (OpenAI, Anthropic, Google). Runs entirely in the browser.
Endpoint
N/A
Browser-only (client-side calculation)
No Server API
Response
Content-Type: N/A
This tool estimates tokens (~chars/4) and calculates cost based on model pricing. No server-side API is available.
// Browser-only: no API endpoint
cURL Example
# No cURL equivalent — this tool runs in the browser
Code Samples
// Simple token estimation
const text = 'Your prompt here...';
const estimatedTokens = Math.ceil(text.length / 4);
const costPer1M = 2.50; // GPT-4o input
const cost = (estimatedTokens / 1000000) * costPer1M;
console.log(`Tokens: ${estimatedTokens}, Cost: $${cost.toFixed(6)}`);
# Token estimation with tiktoken
import tiktoken
enc = tiktoken.encoding_for_model('gpt-4o')
tokens = enc.encode('Your prompt here...')
print(f'Tokens: {len(tokens)}')
// Token estimation (approximate)
String text = "Your prompt here...";
int estimatedTokens = (int) Math.ceil(text.length() / 4.0);
double cost = (estimatedTokens / 1_000_000.0) * 2.50;
System.out.printf("Tokens: %d, Cost: $%.6f%n", estimatedTokens, cost);