GPT-6 Astra → GPT-5.5: cost per request on six tasks
GPT-5.5 costs 42–49% less than GPT-6 Astra per request on six common tasks. It costs no more per result that works if its results work first time at least 51% as often as GPT-6 Astra's on search re-ranking, and 59% as often on translation.
List prices per million tokens
| Model | Input | Cached input | Output |
|---|---|---|---|
| GPT-6 Astra | $10.00 | $1.00 | $50.00 |
| GPT-5.5 | $5.00 | $0.50 | $30.00 |
Prices checked 2026-11-12.
Cost per 1,000 requests
| Task | GPT-6 Astra | 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. | $45.00 | $24.00 | 47% less | 54% as often as GPT-6 Astra |
| Invoice field extractionInstructions and one invoice's text in; about 15 fields as JSON out. | $37.50 | $20.00 | 47% less | 54% as often as GPT-6 Astra |
| Lead scoringScoring rules and one lead's form answers in; a score and a one-line reason out. | $17.00 | $9.00 | 47% less | 53% as often as GPT-6 Astra |
| Email reply draftInstructions and the email thread so far in; a reply of about 300 words out. | $35.00 | $19.50 | 44% less | 56% as often as GPT-6 Astra |
| TranslationInstructions and about 500 words of text in; the same text in another language out. | $49.00 | $28.50 | 42% less | 59% as often as GPT-6 Astra |
| Search re-rankingA search query and 20 result snippets in; the ids of the best five, in order, out. | $42.50 | $21.50 | 49% less | 51% as often as GPT-6 Astra |
Token counts are typical sizes, not measurements.
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