GPT-6 Astra
$10.00 / $50.00 per 1M tokens
Price the API before you ship it
Pick a model, paste a sample or type a token count. Each page shows the published rates, the source we used, and the date we checked it.
Popular models
GPT-5.5
$5.00 / $30.00 per 1M tokens
GPT-5.4
$2.50 / $15.00 per 1M tokens
GPT-5.4 mini
$0.75 / $4.50 per 1M tokens
GPT-5.6 Terra
$2.00 / $12.00 per 1M tokens
o4-mini
$1.10 / $4.40 per 1M tokens
Claude Fable 5
$10.00 / $50.00 per 1M tokens
Claude Fable 5.1
$10.00 / $50.00 per 1M tokens
Claude Opus 5
$5.00 / $25.00 per 1M tokens
Claude Sonnet 5
$3.00 / $15.00 per 1M tokens
Claude Haiku 4.5
$1.00 / $5.00 per 1M tokens
Gemini 3.1 Pro
$2.00 / $12.00 per 1M tokens
Gemini 3.6 Flash
$0.75 / $3.75 per 1M tokens
Gemini 3.7 Flash
$0.75 / $3.75 per 1M tokens
Gemini 3.5 Flash
$1.50 / $9.00 per 1M tokens
Gemini 3 Flash Preview
$0.5 / $3.00 per 1M tokens
Gemini 3.5 Flash-Lite
$0.3 / $2.50 per 1M tokens
Gemini 3.8 Flash
$0.75 / $3.75 per 1M tokens
Popular metered services
Stripe online card payment (illustrative fixed fee only)
$0.3 / successful charge (fixed fee portion)
Twilio SMS outbound (US illustrative)
$0.0083 / outbound SMS segment
Twilio Programmable Voice outbound (US illustrative)
$0.014 / outbound voice minute
Resend email overage (Pro plan)
$0.0009 / email beyond plan quota
Postmark email overage (Basic plan)
$0.0018 / email beyond plan quota
OpenAI Whisper transcription
$0.006 / audio minute
OpenAI gpt-transcribe
$0.0045 / audio minute
OpenAI TTS-1 text-to-speech
$0.000015 / character
OpenAI Sora 2 video (720p)
$0.1 / generated video second
Cloudflare Workers requests (paid plan overage style)
$0.0000003 / request
AWS Lambda requests
$0.0000002 / request
Amazon SES outbound email (Essentials illustrative)
$0.00016 / outbound email
Vercel Function invocations (illustrative)
$0.0000006 / function invocation
Cloudflare Workers AI Neurons
$0.000011 / Neuron
Neon compute hour (illustrative)
$0.106 / compute hour
Upstash Redis command
$0.000002 / Redis command
GitHub Actions Linux 2-core minute
$0.006 / Linux 2-core runner minute
Bunny.net CDN bandwidth
$0.01 / GB CDN bandwidth
Guides
guides
How to estimate LLM API cost before you build
Turn token rates, request volume, output length, and cache assumptions into a monthly budget you can test.
guides
Input vs. output token pricing: what changes the bill
See how the input/output mix changes cost, why averages hide risk, and which workload controls matter.