Cost calculator
What will it cost per month?
Enter your monthly tokens and how they split between input and output. We start you with the ten highest-scoring models that have a public price. Prices from OpenRouter, Nov 4, 2026.
7.5M input + 2.5M output tokens a month
Cheapest of these
$40.00
a month with Gemini 4 Argon (High)
Priciest of these
$200
a month with Claude Fable 5.1 (Max)
Spread
5×
between cheapest and priciest
Estimated monthly cost
Gemini 4 ArgonHighSIscope 96 · $2 in · $10 out per 1M$40.00per month
Claude Sonnet 5.5xHighSIscope 96 · $2 in · $10 out per 1M$40.00per month
GPT-6.1 SolMaxSIscope 93 · $2 in · $10 out per 1M$40.00per month
Claude Opus 5.5HighSIscope 99 · $4 in · $20 out per 1M$80.00per month
Claude Opus 5HighSIscope 97 · $5 in · $25 out per 1M$100per month
Claude Opus 4.6SIscope 92 · $5 in · $25 out per 1M$100per month
Claude Opus 4.7HighSIscope 91 · $5 in · $25 out per 1M$100per month
GPT-5.5HighSIscope 93 · $5 in · $30 out per 1M$113per month
Claude Fable 5.1MaxSIscope 97 · $10 in · $50 out per 1M$200per month
GPT-6 AstraMaxSIscope 93 · $10 in · $50 out per 1M$200per month
Estimate = tokens × (input share × input price + output share × output price), using OpenRouter list prices for the exact model version. Reasoning models also bill their hidden thinking as output, so real bills can be higher. Taxes, caching discounts and batch pricing are not included.