What will your LLM API bill actually be?

Pick a model, enter your token usage, and see the real cost in seconds — official prices only, verified 2026-10-24, no sign-up. Stop guessing before the invoice arrives.

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Cost per call

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Estimated monthly cost

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Add up to 4 models, same usage, sorted by cost.

Current official prices

USD per 1M tokens. Prices verified 2026-10-24 — see each model's page for its own verification date.

ModelProviderInputOutputCached inputVerified
GPT-6 AstraOpenAI$10$50$12026-10-24
GPT-6.1 SolOpenAI$2$10$0.12026-10-24
Claude Sonnet 5.5Anthropic$2$10$0.12026-10-24
Claude Haiku 5.5Anthropic$0.1$0.5$0.012026-10-24
Gemini 4 ArgonGoogle$2$10$0.12026-10-24
GPT-6 LunaOpenAI$0.1$0.5$0.012026-10-24
Claude Opus 5.5Anthropic$4$20$0.22026-10-24
Gemini 3.1 ProGoogle$2$12—2026-10-24
Gemini 3.8 FlashGoogle$0.75$3.75—2026-10-24
Gemini 3.1 Flash-LiteGoogle$0.25$1.5—2026-10-24

Popular model calculators

GPT-6 Astra cost calculatorOpenAI · $10 in / $50 out per 1MGPT-6.1 Sol cost calculatorOpenAI · $2 in / $10 out per 1MClaude Sonnet 5.5 cost calculatorAnthropic · $2 in / $10 out per 1MClaude Haiku 5.5 cost calculatorAnthropic · $0.1 in / $0.5 out per 1MGemini 4 Argon cost calculatorGoogle · $2 in / $10 out per 1MGPT-6 Luna cost calculatorOpenAI · $0.1 in / $0.5 out per 1MClaude Opus 5.5 cost calculatorAnthropic · $4 in / $20 out per 1MGemini 3.1 Pro cost calculatorGoogle · $2 in / $12 out per 1MGemini 3.8 Flash cost calculatorGoogle · $0.75 in / $3.75 out per 1MGemini 3.1 Flash-Lite cost calculatorGoogle · $0.25 in / $1.5 out per 1M

Browse providers or head-to-head comparisons.

Frequently asked questions

How accurate are these prices?

Every price comes from the provider’s official pricing page and is cross-checked against a second source. Each model shows the date its price was last verified, and the full dataset is re-checked weekly.

What is the difference between official and gateway prices?

Official prices are what OpenAI, Anthropic and Google charge for direct API access. Gateways such as OpenRouter resell access at their own rates, which can differ. This calculator uses official prices and always labels the source — many calculators mix the two without telling you.

How are tokens counted when I paste text?

For OpenAI models we count with the real o200k tokenizer in your browser. Anthropic and Google publish no official browser tokenizer for current models, so those counts are labeled estimates. Your text is never uploaded anywhere.