---
id: "openai/gpt-6-sol"
also: ["openai/gpt-6-sol-20260922", "requesty/openai/gpt-6-sol", "vercel/openai/gpt-6-sol"]
card_usd_per_m: "2.0 in, 10.0 out, at openai"
cheapest_list_usd_per_m: "1.0 in, 5.0 out, at openai/flex on openrouter"
cheapest_effective_usd_per_m: "0.4214 in, 10.0 out, at azure@eastus2 on requesty"
context: 1050000
max_output: 128000
input: ["file", "image", "text"]
output: ["text"]
released: "2026-09-22"
reasoning: ["max", "xhigh", "high", "medium", "low", "none"]
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["include_reasoning", "max_completion_tokens", "max_tokens", "reasoning", "reasoning_effort", "response_format", "seed", "stop", "structured_outputs", "temperature", "tool_choice", "tools", "verbosity"]
endpoints: 18
gateways: "openrouter (8), requesty (7), vercel (3)"
no_training: 18
trains: 0
retains_prompts: 7
intelligence: 44.2000
---
# OpenAI: GPT-6 Sol

GPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier. It is suited for demanding professional work, agentic coding, business workflow automation, and computer use, and is particularly strong at long-horizon software engineering tasks in real codebases. It approaches Astra-level factual reliability at a much lower cost.