aiaimodel.cards

GPT-6.1 Sol

Language modelCard summarized

Near-Astra performance for complex work at a lower cost.

Active (latest)● Re-checked 12 Oct 2026 · 92 facts · 1 correctionSource: Addendum to GPT-6 Astra System Card: GPT-6.1 Sol (48 pp)

Use it via API

$1,158 /month
$23.16 per 1K requests
RAG over docs: 12K in · 600 out · 50K requests/mo · 30% cached · change
Code exampleCompare

Where to call it

  • OpenAI APIgpt-6.1-sol

Supports

  • Image input
  • Streaming
  • Structured outputs
  • Reasoning control
  • Tool calling
  • Web search
  • Prompt caching
  • Batch API
Full feature support

Good for

  • Complex coding, computer use and professional work at lower cost than Astra
  • Health answers on par with GPT-6 Astra on HealthBench
  • Dynamic mental-health evaluations at or above GPT-6 Sol and GPT-6 Astra

Watch out for

Overview

OpenAI · 03Sol, front

GPT-6.1 Sol

Near-Astra performance for complex work at a lower cost.

Cost
$2.00 in
Context
1.05M
Input / output
$2.00 / $10.00
Max output
128K
Knows up to
April 2026
Released
29 Sep 2026

The first GPT-6.1 model, described as delivering capabilities comparable to GPT-6 Astra with more speed and lower cost. It is treated as Critical in cybersecurity like Astra and uses the same safeguards stack. The addendum updates baseline safety metrics and refers to the Astra card for methods. p.4

gpt-6.1-sol
Input / output per 1M
$2.00 / $10.00
Context window
1.05M
Max output
128K
Knows up to
April 2026
Reasoning
Reasoning, always on (effort low → max)
Weights
Closed

About this card. A model card is the maker's own account of a model: what it's for, how it was trained and tested, and where it falls short. This page condenses OpenAI's Addendum to GPT-6 Astra System Card: GPT-6.1 Sol. Every claim carries its source page.