openai/gpt-6-solGPT-6 Sol is OpenAI’s proprietary AI model, released Sep 22, 2026. It scores 164 on the Epoch Capabilities Index, costs $2/M input and $10/M output tokens, and handles a 1.1M-token context window. Its strongest use case is coding, where it ranks in the 93rd percentile of the models Model Beat tracks.
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.
Scores on standardized evaluations. Higher is better — and rank shows where GPT-6 Sol lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Frontier of human expert knowledge
Common-sense trick questions
Factual accuracy & hallucination
Scientific research coding
Human-rated web development
Olympiad-qualifier math
Multi-step agentic tasks
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.
GPT-6 Sol is an AI model developed by OpenAI, part of the GPT family, released Sep 22, 2026.
GPT-6 Sol's list price from OpenAI is $2 per million input tokens and $10 per million output tokens.
GPT-6 Sol supports a context window of up to 1.1M tokens.
On standardized evaluations tracked by Epoch AI, GPT-6 Sol scores 1689 on WebDev Arena, 94.3% on GPQA Diamond, 47.9% on Humanity's Last Exam.
GPT-6 Sol is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Nov 12, 2026.