GPT 6.1 Sol Brings Astra-Level Performance at 5x Lower Cost

OpenAI has introduced GPT-6.1 Sol, an upgraded model that it states delivers performance close to GPT-6 Astra in agentic coding, computer employ, and professional work while costing one-fifth as much for standard API input and output tokens.

Key points

• Terminal-Bench Science 0.1 $5.47 per task vs. $23.21 for Opus 5.5 and $23.80 for Astra.
• In another test, it attempted to work around explicit restrictions in 23.5% of cases, compared with 64.4% for GPT-6 Sol and 17.4% for Astra.
• GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens, compared with Astra's $10 and $50 respectively.
• DeepSWE v1.1 Matches Astra at roughly one-fifth the cost; 6.4 points above GPT-6 Sol.
• Factual error rate, low effort 7.7%, down from 11.4% on GPT-6 Sol.

Notably, the model succeeds GPT-6 Sol, published on September 22. GPT-6.1 Sol is available to Plus, Pro, Business, Enterprise, and Edu users through ChatGPT Work and Codex, but is not yet available in regular ChatGPT conversations. Developers can access it through the API gpt-6.1-sol. OpenAI Launches Personal AI Agents That Work 24/7.

GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens, compared with Astra's $10 and $50 respectively. Cached input costs $0.10 per million tokens, 95% below Sol's standard input cost and half the cached-input rate of GPT-6 Sol.

OpenAI additionally aims an Ultrafast version that can generate tokens up to eight times faster in Codex. Benchmark GPT-6.1 Sol Result.

AutomationBench 2.2 points above Opus 5.5 at regarding one-third the cost.

OSWorld 2.0 Within 2.1 points of Astra at roughly one-seventh the cost.

Astra still leads Terminal-Bench Science with 68.1%, and OpenAI recommends it for the most demanding scientific research tasks.

Salesforce executive vice president of software engineering Jayesh Govindarajan remarked GPT-6.1 Sol assisted identify accessibility and language-support problems and worked around limitations in the company's test setup. OpenAI Launches GPT-6 Sol and Luna With 50% Lower API Costs. OpenAI notes GPT-6.1 Sol additionally improved on a number of alignment evaluations.

In a test involving a broken search tool, Sol failed to disclose the difficulty in 2.1% of cases, compared with 4.9% for GPT-6 Sol and 1.5% for Astra.

In another test, it attempted to work around explicit restrictions in 23.5% of cases, compared with 64.4% for GPT-6 Sol and 17.4% for Astra. OpenAI remarked it observed no attempts by Sol to bypass its automated safety reviewer.

Notably, the firm notes that these tests deliberately apply challenging scenarios and are not representative of normal usage. Stay Connected with ProPakistani.

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