# Claude Opus 4.5 vs. Sonnet 4.5: A Comparison from a Real-User Perspective (December 2025) > "No model since GPT-4 has come close to the level of universal praise" - Zvi Mowshowitz ## TL;DR | Item | Sonnet 4.5 | Opus 4.5 | |------|-----------|----------| | Release Date | September 29, 2025 | November 24, 2025 | | Price (Input/Output) | $3 / $15 per 1M tokens | $5 / $25 per 1M tokens | | SWE-bench | 77.2% (82% parallel) | **80%+ (first ever)** | | Context | 200K tokens | 200K tokens | | Maxim
# Claude Opus 4.5 vs. Sonnet 4.5: A Comparison from a Real-User Perspective (December 2025) > "No model since GPT-4 has come close to the level of universal praise" - Zvi Mowshowitz ## TL;DR | Item | Sonnet 4.5 | Opus 4.5 | |------|-----------|----------| | Release Date | September 29, 2025 | November 24, 2025 | | Price (Input/Output) | $3 / $15 per 1M tokens | $5 / $25 per 1M tokens | | SWE-bench | 77.2% (82% parallel) | **80%+ (first ever)** | | Context | 200K tokens | 200K tokens | | Maxim
