System record

GPT-5.6 Sol, Max reasoning / Codex CLI

Organization: OpenAI · base model: GPT-5.6 Sol, Max reasoning / Codex CLI

System and setup

Reported system information
Model versionnot reported
Software used to run the modelCodex CLI, Max reasoning
Software versionnot reported
Tools available to the modelOne H100 per base-model × target-benchmark run; benchmark evaluator and decontamination checker
Release dateNot reported

Autonomy assessments

No autonomy assessment is published for this system.

Published capability results

Benchmark and indicator evidence
MeasureVersionReported resultDate
PostTrainBenchPostTrainBench v1.1 · September 2026 results36.23%2026-09-18

Related research

Additional system details
System ID
ptb-v11-gpt-5-6-sol
Organization
OpenAI
Base model
GPT-5.6 Sol, Max reasoning / Codex CLI
Release date
Not reported
Assessment records
0
Recursive evidence records
0