Model comparison · updated 2026-07-28

GPT-5.5 ProvsGPT-5.5

Side-by-side pricing for1 million tokens

Price comparison

GPT-5.5 ProGPT-5.5Verdict
ProviderOpenAIOpenAI--
Context window400K400K--
Input / 1M tokens$30$5GPT-5.5 is 6x cheaper
Output / 1M tokens$180$30GPT-5.5 is 6x cheaper
Output:input ratio6x6x--
Tierfrontierflagship--

GPT-5.5: Long-context (>272K input) priced at 2× input / 1.5× output.

What does $10 buy?

$10 of input

GPT-5.5 Pro

333,333 tokens

GPT-5.5

2,000,000 tokens

GPT-5.5 gives you 6x more input for the same budget.

$10 of output

GPT-5.5 Pro

55,556 tokens

GPT-5.5

333,333 tokens

GPT-5.5 gives you 6x more output for the same budget.

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