GPT 5.5 Pricing

Frontier reasoning and coding with 1M-token context window.

PlaygroundAPIPricing
~11.60s

Estimate your cost

Pick what one request looks like. You pay only for what you run: no minimums, no commitments.

Estimated cost

$0.0437

per request

1,000 input tokens at $6.25 per million
$0.00625
1,000 output tokens at $37.5 per million
$0.0375
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Rates

Pay as you go

Partner model served through the Segmind API and billed in Segmind credits

Input
$6.250
Output
$37.500
per million tokens
Reasoning effort
Thinking is billed as output tokens at the rate above. The effort parameter changes how many of them the model spends, not the rate, so the same prompt costs more at a higher level.
  • No upfront costs - Only pay for what you use
  • Partner-hosted - Served from the provider's own API through Segmind
  • Universal credits - Use anywhere on Segmind
  • No setup - Call the API right away