Model prices / OpenAI

GPT-6.1 Sol API pricing

Official API pricing for GPT-6.1 Sol (OpenAI) on OpenAI API Platform: cache and off-peak prices, context length, open weights and regional availability, with sources and check dates.

Context: 1.05M
Max output: 128K
Open weights: No
Current version: —

GLOBAL · USD OpenAI API Platform

gpt-6.1-sol

Tier	Input	Cached input	Cache write	Output
Input ≤272K	$2≈¥13.37	$0.1≈¥0.669	$2.5≈¥16.72	$10≈¥66.86
Input >272K	$4≈¥26.74	$0.2≈¥1.337	$5≈¥33.43	$15≈¥100.29

Mainland China NoOutside China YesOfficial payment Card

per 1M tokens · Source 2026-10-17

Standard tier. Prompts over 272K input tokens are billed at the long-context rate for the whole request (2x input and cache, 1.5x output); cache writes are 1.25x input. Batch/Flex (50% off), Fast (2x) and Ultrafast tiers not listed; regional-processing (data residency) endpoints add 10%

Source

https://developers.openai.com/api/docs/models/gpt-6.1-sol · 2026-10-17

≈ marks values converted at the ECB reference rate, for comparison only; the published currency is authoritative.