GPT-5.6 Sol → GPT-5.5: cost per request on six tasks
GPT-5.5 costs 26–45% more than GPT-5.6 Sol per request on six common tasks. It costs no more per result that works if its results work first time at least 27% more often than GPT-5.6 Sol's on search re-ranking, and 46% more often on translation.
List prices per million tokens
| Model | Input | Cached input | Output |
|---|---|---|---|
| GPT-5.6 Sol | $4.00 | $0.40 | $20.00 |
| GPT-5.5 | $5.00 | $0.50 | $30.00 |
Prices checked 2026-11-12.
Cost per 1,000 requests
| Task | GPT-5.6 Sol | GPT-5.5 | Change | Cheaper per result that works if it works first time at least |
|---|---|---|---|---|
| Support bot answerInstructions, three help-centre passages and the customer's question in; a short answer out. | $18.00 | $24.00 | 33% more | 34% more often than GPT-5.6 Sol |
| Invoice field extractionInstructions and one invoice's text in; about 15 fields as JSON out. | $15.00 | $20.00 | 33% more | 34% more often than GPT-5.6 Sol |
| Lead scoringScoring rules and one lead's form answers in; a score and a one-line reason out. | $6.80 | $9.00 | 32% more | 33% more often than GPT-5.6 Sol |
| Email reply draftInstructions and the email thread so far in; a reply of about 300 words out. | $14.00 | $19.50 | 39% more | 40% more often than GPT-5.6 Sol |
| TranslationInstructions and about 500 words of text in; the same text in another language out. | $19.60 | $28.50 | 45% more | 46% more often than GPT-5.6 Sol |
| Search re-rankingA search query and 20 result snippets in; the ids of the best five, in order, out. | $17.00 | $21.50 | 26% more | 27% more often than GPT-5.6 Sol |
Token counts are typical sizes, not measurements.
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