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GPT-6.1 Sol

OpenAI · released 29 Sep 2026 · proprietary API

Near-Astra performance for complex coding, computer use and professional work at a lower cost; reasoning effort low to max.

Context window

1.05M

1,050,000 tokens

Input price

$2

per 1M tokens

Output price

$10

per 1M tokens

Blended

$4

3:1 in:out mix

Weights

Proprietary

API only

Released

29 Sep 2026

OpenAI

Long-context / tier pricing — >272K input reprices the FULL request at 2x input and cache rates / 1.5x output ($4 in / $15 out per 1M); cached input $0.10/1M (5% of base) and cache writes $2.50/1M (1.25x uncached input); Batch and Flex 50% of standard, Fast mode 2x; regional processing +10%; max input is 922K of the 1,050K window. Listed prices are the base rate for prompts up to ~200K tokens.

Where it ranks

Of 42 models tracked.

Cost to run

#26(tied)

of 42

Input price

#22(tied)

of 42

Context window

#1(tied)

of 42

See the full Frontier Index →

Compare with

The nearest models by blended cost to run.

Put it to work

Specs from BitByteCore's hand-verified Frontier Ledger (v2026-10-01), this row verified 1 Oct 2026 against OpenAI's official pricing ↗. Model pricing moves fast, so confirm with OpenAI before you rely on a figure.