Models / OpenAI

GPT-6.1 Sol Pro

by OpenAI · openai/gpt-6.1-sol-pro

GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

reasoningtool-usevisionreleased 2026-09-29

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Legal score · raw

not yet benchmarked

Context

1.05M

max output 128K

Input

$2.50

per 1M tokens

Output

$12.50

per 1M tokens

Suite cost

no run recorded

Prompt caching

Grounded answers re-send the same retrieved authority every turn, so a cached read is what a long matter actually costs. Prices are per 1M tokens, from the provider’s own catalog.

Cache read

$0.13

20x cheaper than uncached

Cache write

$3.13

per 1M tokens, charged once

Uncached input

$2.50

per 1M tokens

Capabilities

Modalities

in fileimagetext

out text

Request parameters it accepts

include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbosity

Benchmark results

This model has not been run through the suite yet. See Humanity's Last Lawsuit for the benchmark models are ranked on.