Estimate and compare AI API costs based on your actual usage.
Compare standard text API pricing across leading AI providers.
Standard text pricing, verified against official provider documentation.
Pricing verified from official provider documentation. Last review: Sep 18, 2026.
Enter your expected monthly volume. Every field accepts non-negative numbers only.
Preset values are illustrative examples only, not industry averages or benchmarks.
Total API requests per month
Prompt tokens sent per request
Some providers change pricing for long-context requests. ModelMeter applies supported pricing tiers automatically.
Completion tokens returned per request
Include billable reasoning / thinking tokens where your provider charges for them.
Based on your usage and the verified pricing dataset.
Sorted by estimated monthly cost, lowest first.
Based on your usage, the cheapest option costs $100.00 per month and the most expensive costs $2,250.00 per month.
Switching from the highest-cost option to the lowest-cost option could reduce the estimated monthly cost by $2,150.00 (95.6%).
Compared on estimated cost only. Model quality, latency and capability are not measured.
gpt-5.6-luna
Estimated Monthly Cost
$100.00
OpenAI bills requests above the 272K-token context boundary at this model's long-context rate. ModelMeter selects the tier from your average input tokens per request.
gemini-3.1-flash-lite
Estimated Monthly Cost
$125.00
+$25.00 vs lowest-cost option · 25% higher than the lowest-cost option
claude-sonnet-5
Estimated Monthly Cost
$900.00
+$800.00 vs lowest-cost option · 800% higher than the lowest-cost option
gpt-5.6-terra
Estimated Monthly Cost
$1,000.00
+$900.00 vs lowest-cost option · 900% higher than the lowest-cost option
OpenAI bills requests above the 272K-token context boundary at this model's long-context rate. ModelMeter selects the tier from your average input tokens per request.
gemini-3.1-pro-preview
Estimated Monthly Cost
$1,000.00
+$900.00 vs lowest-cost option · 900% higher than the lowest-cost option
Google bills prompts above 200,000 tokens at this model's higher tier. ModelMeter selects the tier from your average input tokens per request.
claude-opus-5
Estimated Monthly Cost
$2,250.00
+$2,150.00 vs lowest-cost option · 2,150% higher than the lowest-cost option
Every price in the dataset is read from the provider's own pricing documentation. Third-party price aggregators are not used.
OpenAI API Pricing
Verified Sep 18, 2026
View official pricingAnthropic Claude API Pricing
Verified Sep 18, 2026
View official pricingGoogle Gemini API Pricing
Verified Sep 18, 2026
View official pricingPricing data should be verified against official provider documentation.
Last pricing review: Sep 18, 2026
ModelMeter turns expected token usage into a monthly cost estimate and compares that estimate across AI models. It is built as a small, focused developer tool: enter your volume, read the breakdown, and sanity-check a budget before the invoice arrives.
Pricing is maintained by hand from each provider's official documentation. Every entry records the model identifier, the standard-tier input and output prices, the pricing mode, the source URL and the date it was last verified — see Pricing Sources.
ModelMeter compares estimated cost only. It does not rank model quality.
The source code and the full pricing dataset are public in the ModelMeter GitHub repository (opens in a new tab).