Anthropic’s newly released Claude Sonnet 4.6 model, featuring a 1 million‑token context window, is evaluated against the flagship Opus 4.5 across coding, long‑context reasoning, agent planning and other tasks, revealing mixed performance, user preferences, and detailed benchmark comparisons.
The article evaluates Anthropic's Claude Sonnet 4.6 as a comprehensive research assistant, detailing its performance on literature surveys, open‑source code analysis, algorithm implementation, cost savings, benchmark scores, and practical limitations across multiple scientific workflows.
Anthropic’s Claude Sonnet 4.6, released on Chinese New Year, boosts computer‑use ability, supports a 1 million‑token context window, adds dynamic web‑search filtering, and improves benchmark scores (OSWorld 72.5%, SWE‑bench 79.6%, GPQA 89.9%) while keeping the same price, earning high praise from industry leaders.
Anthropic unveiled Claude Sonnet 4.6 on February 18, touting Opus-level coding ability, a 1 million-token context window, and unchanged pricing; benchmarks show a SWE-bench score of 79.6% (up from 77.2%), OSWorld 72.5% (vs 61.4%), and GPQA Diamond 89.9%, while industry leaders praise its reduced laziness, stronger instruction following, and strategic long-term planning.
