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GPT-6 Sol

OpenAIProprietaryPending Human Review

GPT-6 Sol is the GPT-6 workhorse tier for complex coding and agent workflows, released alongside Luna. It combines a long context with image understanding and reasoning effort from none to max. Responses provides its built-in tools, while Chat Completions function calling requires reasoning to be disabled. GPT-6.1 Sol is a subsequent distinct weight update.

2026-09-22
Unreleased
Undisclosed proprietary architecture
Proprietary

Specifications

Parameters
Unreleased
Architecture
Undisclosed proprietary architecture
License
Proprietary
Context Window
1,050,000 tokens
Max Output
128,000 tokens
Training Data Cutoff
Apr 20, 2026
Type
multimodal
Modalities
textimage

Benchmark Scores

Advanced Specifications

Model Family
GPT-6
API Access
Available
Chat Interface
Not Available
Variants
gpt-6-sol

Capabilities & Limitations

Capabilities
reasoningagentic codingcomputer usevisiontool use
Known Limitations
Can produce incorrect factual claims or code; important results require independent verification.Chat Completions function calling requires reasoning_effort none; use Responses for tools with reasoning.
Notable Use Cases
professional codingagent workerslong-context analysis
Function Calling Support
Yes
Tool Use Support
Yes

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