Jessica Wachtel

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Claude Sonnet 5.5 vs. Opus 5.5: 42% cheaper and perfect on every run

Oct. 8, 2026 » The New Stack » [Archived Version]

Anthropic launched Sonnet 5.5 six days after Opus 5.5. The company says it scores 70.6% on Terminal-Bench 4.0, ahead of The post Claude Sonnet 5.5 vs. Opus 5.5: 42% cheaper and perfect on every run appeared first on The New Stack.

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

Oct. 7, 2026 » The New Stack » [Archived Version]

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.