Anthropic released Claude Opus 5 on July 24, 2026 to widespread anticipation. Positioned between the premium Fable 5 and the workhorse Sonnet 5, Opus 5 delivers an extraordinary capability-per-dollar ratio. At $5/$25 per million tokens — half the price of Fable 5 — it achieves 95% of the benchmark performance, making it the smartest buy in Anthropic’s lineup.
Benchmark Performance
Opus 5 scored 61 on the Artificial Analysis Intelligence Index, the highest score that index has ever recorded. On SWE-bench Pro, it scores 79.2%, narrowly behind Fable 5’s 80.0%. On GPQA Diamond, MMLU, and other standardized tests, Opus 5 matches or exceeds every model except the Mythos-class Fable 5.
What Makes Opus 5 Special
Anthropic designed Opus 5 for reliability. It maintains strong safety guarantees through constitutional AI while delivering near-frontier performance. For enterprises that need maximum capability without paying flagship prices, Opus 5 is arguably the best value in the AI market today. It supports 1M token context, vision, function calling, and all the API features developers expect.
Who Should Buy
Enterprises doing high-volume coding, knowledge work, and analysis. Teams that need consistent, safe, and capable AI without the Fable 5 premium. Researchers and developers who want frontier-adjacent capability at a reasonable price.
Related: AI Model Comparison 2026
