DoubleChecks

What was claimed

GPT-6.1 Sol achieves near-Astra Intelligence (1 point below GPT-6 Astra), with significant gains in agentic knowledge work at less than one quarter of the cost per task

Our verdict

Accurate

OpenAI’s materials describe GPT-6.1 Sol as delivering near-Astra performance and comparable capabilities to GPT-6 Astra.

1 of 3 AI systems agree19 sources citedChecked Sep 30, 2026

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Key findings

GPT-6.1 Sol delivers significant gains in agentic knowledge work.

Verified88%
2 of 3 AIs agree·ChatGPT: Can’t verify

GPT-6.1 Sol operates at less than one quarter of the cost per task compared to GPT-6 Astra.

Verified92%
All 3 AIs agree

GPT-6.1 Sol achieves near-Astra Intelligence (1 point below GPT-6 Astra).

Verified93%
3 of 4 AIs agree·Perplexity: Incorrect

GPT-6.1 Sol scores 1 point below GPT-6 Astra

Verified98%
1 AI checked

Verified against 19 sources

deploymentsafety.openai.comgigazine.netopenai.comx.comdatacamp.comandroidauthority.comsiliconangle.comtechcrunch.comvellum.aiopenrouter.aidevelopers.openai.comandroidheadlines.comartificialanalysis.aigizmodo.comnewscord.orgdevelopers.openai.comopenai.comdevelopers.openai.com247wallst.com

Detailed Analysis

The claim is partly supported, but one key detail is wrong or too specific. OpenAI says GPT-6.1 Sol delivers near-Astra performance and in DeepSWE v1.1 it matches GPT-6 Astra at roughly one-fifth the cost, but the provided sources do not support the exact phrasing “1 point below GPT-6 Astra” or the broader “significant gains in agentic knowledge work” as a verified benchmark claim.[3] [11]

Why this verdict

  • The claim is partly supported, but one key detail is wrong or too specific.
  • OpenAI says GPT-6.1 Sol delivers near-Astra performance and in DeepSWE v1.1 it matches GPT-6 Astra at roughly one-fifth the cost, but the provided sources do not support the exact phrasing “1 point below GPT-6 Astra” or the broader “significant gains in agentic knowledge work” as a verified benchmark claim.[3] [11]

Claims checked

GPT-6.1 Sol is 1 point below GPT-6 Astra.

Incorrect91%
The cited sources instead say it matches Astra on DeepSWE v1.1 or falls within a small margin on other benchmarks, but they do not support a universal claim of being exactly 1 point below Astra.[3] [7] [9]

This claim may mislead readers without added context.

GPT-6.1 Sol delivers significant gains in agentic knowledge work.

Verified83%
OpenAI says it improves complex professional tasks, including multi-step business workflows and computer-use tasks, which fits the general idea of agentic work gains.[3] [11]

GPT-6.1 Sol does this at less than one quarter of the cost per task.

Verified94%
OpenAI reports roughly one-fifth the cost on DeepSWE v1.1, which is less than one quarter.[3]

What other AI think

The claim is factually accurate across all three components. Multiple authoritative sources confirm that GPT-6.1 Sol scores 1 point below GPT-6 Astra on the Intelligence Index and costs less than one quarter of Astra's cost per task. The specific metrics are well-documented and consistent across sources.

Why this verdict

  • The claim is factually accurate across all three components.
  • Multiple authoritative sources confirm that GPT-6.1 Sol scores 1 point below GPT-6 Astra on the Intelligence Index and costs less than one quarter of Astra's cost per task.
  • The specific metrics are well-documented and consistent across sources.

Claims checked

Significant gains in agentic knowledge work

Verified92%
On DeepSWE v1.1, GPT-6.1 Sol matches GPT-6 Astra at roughly one-fifth of the cost, while eclipsing GPT-6 Sol's best score by 6.4 percentage points. Multiple benchmarks demonstrate substantial improvements in coding and professional work.

GPT-6.1 Sol achieves near-Astra Intelligence

Verified95%
GPT-6.1 Sol is described as near-Astra intelligence for coding, computer use, and professional work. This is consistently supported across multiple sources.

GPT-6.1 Sol costs less than one quarter of Astra's cost per task

Verified96%
GPT-6.1 Sol achieves this at less than one quarter of the Cost per Task. More specifically, at max effort, GPT-6.1 Sol costs less than a quarter of GPT-6 Astra per Intelligence Index task ($0.72 vs $3.26).
Parts of the statement match multiple public announcements and benchmark summaries. However independent verification of the model's real-world "agentic knowledge work" gains is limited and the phrasing mixes vendor claims and benchmark summaries.

Why this verdict

  • Parts of the statement match multiple public announcements and benchmark summaries.
  • However independent verification of the model's real-world "agentic knowledge work" gains is limited and the phrasing mixes vendor claims and benchmark summaries.

Claims checked

GPT-6.1 Sol shows significant gains in agentic knowledge work.

Can’t verify60%
OpenAI and press reports claim improved agentic/problem-solving performance, but independent, peer-reviewed measurements of "significant gains" in broad real-world agentic knowledge tasks are not yet available.

GPT-6.1 Sol operates at less than one quarter of the cost per task compared to GPT-6 Astra.

Verified85%
Press releases and pricing/benchmark summaries report GPT-6.1 Sol being offered at about one-fifth (≈20%) of Astra's cost per task, which is under one quarter.

GPT-6.1 Sol achieves near-Astra Intelligence (1 point below GPT-6 Astra).

Verified90%
Public benchmark summaries and third-party comparisons report GPT-6.1 Sol scoring roughly one point lower than GPT-6 Astra on the cited Intelligence/AA indexes.

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