GPT-5.4
$2.5/M input
$15/M output
$0.25/M cached input
Flagship short/long context pricing seed.
Model comparison
GPT-5.4 vs Claude Sonnet 4.6 Cost Calculator
Claude Sonnet 4.6
$3/M input
$15/M output
$0.3/M cached input
Balanced Claude seed; US inference may add 1.1x.
Quick estimate
No API key needed. Pick a model, paste your question, choose the answer length, and get a close cost estimate.
$2.5/M input$15/M output400,000 ctxCache pricingBatchFlexPriority
3. How long will the AI answer be?
Your estimate will appear here.
Paste a prompt, choose an answer length, and calculate.
Example request costs
Short prompt
GPT-5.4: $0.0100
Claude Sonnet 4.6: $0.0105
Long coding prompt
GPT-5.4: $0.1375
Claude Sonnet 4.6: $0.1500
App build planning prompt
GPT-5.4: $0.0550
Claude Sonnet 4.6: $0.0600
Which is cheaper, GPT-5.4 or Claude Sonnet 4.6?
GPT-5.4 has the lower combined input plus output seed rate for this comparison.
Why might my bill differ from this comparison?
Cache usage, tools, search, long-context tiers, region multipliers, and provider-reported token counts can change the final bill.