GPT-6 Sol

Overview

OpenAI GPT-6 family model optimized for complex coding and agentic workflows. Released September 22, 2026 alongside gpt-6-luna. API ID gpt-6-sol. Builds on gpt-6-astra alignment advances at lower cost.

Specifications

• Context: 1,050,000 tokens
• Max output: 128,000 tokens
• Knowledge cutoff: April 20, 2026
• Pricing (Standard): $2/$10 per million input/output tokens — 50% below GPT-5.6 promotional rates
• Reasoning effort: none, low, medium (default), high, xhigh, max

Availability

API (Responses API recommended), ChatGPT Work, Codex — Plus/Pro/Business/Enterprise/Edu tiers.

• 2026-10-07: Default Chat tab model for paid chatgpt tiers with intelligent-ui (2026-10-07-openai-gpt-6-intelligent-ui-chatgpt)

Related

• gpt-6
• openai
• gpt-6-astra
• gpt-6-luna
• gpt-5-6-sol
• coding-agents
• frontier-models
• ai-price-wars

Sources

• 2026-09-22-openai-gpt-6-sol-luna-launch
• 2026-09-22-gpt-6-sol-openai-api-docs
• 2026-09-22-gpt-6-sol-luna-ofox-analysis