# Claude Opus 4.5 vs Sonnet 4.5: A Comparison from a Real User's 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 | 2025.09.29 | 2025.11.24 | | 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 | | Max Output |
# Claude Opus 4.5 vs Sonnet 4.5: A Comparison from a Real User's 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 | 2025.09.29 | 2025.11.24 | | 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 | | Max Output |
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