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GPT-6.1 Sol vs. GPT-6 Astra: Same accuracy at 18% of the cost

OpenAI launched GPT-6.1 Sol on September 29, just a week after it launched GPT-6 Sol. OpenAI marketed 6.1 as an The post GPT-6.1 Sol vs. GPT-6 Astra: Same accuracy at 18% of the cost appeared first on The New Stack.

By Jessica WachtelThe New Stack - AI
GPT-6.1 Sol vs. GPT-6 Astra: Same accuracy at 18% of the cost

The article compares OpenAI's GPT-6.1 Sol and GPT-6 Astra models, highlighting their similar accuracy at a significantly lower cost.

What happened

OpenAI released GPT-6.1 Sol as an upgrade to GPT-6 Sol, positioning it as a more affordable option with similar accuracy to GPT-6 Astra. The article presents test results comparing the two models across three tasks, showing GPT-6.1 Sol's performance and cost advantages.

Why it matters

For businesses and developers using AI models, the cost-effectiveness of GPT-6.1 Sol could lead to significant savings without compromising on accuracy, making it a compelling choice for AI-driven tasks.

  • GPT-6.1 Sol provides similar accuracy to GPT-6 Astra at a significantly lower cost.
  • Testing confirmed that GPT-6.1 Sol is faster and cheaper across multiple tasks.
  • Businesses may benefit from adopting GPT-6.1 Sol for cost savings without sacrificing performance.

The bigger picture

The article suggests that GPT-6.1 Sol offers a cost-effective alternative to GPT-6 Astra, which could influence business decisions and resource allocation in AI projects.

The article concludes that GPT-6.1 Sol matches GPT-6 Astra's accuracy at a fraction of the cost, making it a viable and more economical choice for AI applications.

Technical details

  • GPT-6.1 Sol and GPT-6 Astra are large language models with similar accuracy.
  • Testing involved three tasks: CI triage, incident logs, and resolver spec.
  • Costs are measured in per million input/output tokens and cached input pricing.
  • Performance metrics include run time, token usage, and cost per run.

FAQ

What is GPT-6.1 Sol?

GPT-6.1 Sol is an AI model released by OpenAI, marketed as a cheaper alternative to GPT-6 Astra with similar accuracy.

How does GPT-6.1 Sol compare to GPT-6 Astra in terms of cost?

GPT-6.1 Sol costs 18% of what GPT-6 Astra does, with lower input, output, and cached input pricing.

What tests were conducted to compare the models?

The models were tested on three tasks: CI triage, incident logs, and resolver spec, with results showing GPT-6.1 Sol's performance and cost advantages.

This summary and analysis were generated with AI from the original article and may contain errors. Read the original for the full story.

Read the full story

Originally published by The New Stack - AI on Oct 7, 2026.

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