Quick Take

Claude Opus 5 (Anthropic) and Muse Spark 1.1 (Meta) are high-performance models released in July 2026. While they share an identical Intelligence Index of 50.6, they cater to different operational needs. Muse Spark 1.1, Meta's first paid frontier model API, is engineered for agentic tasks, whereas Claude Opus 5 focuses on adaptive reasoning.

Benchmark Read

Performance metrics reveal a nuanced landscape. Muse Spark 1.1 leads in coding capabilities with an index of 71.3 compared to Claude Opus 5’s 66.9. In standardized benchmarks, Muse Spark 1.1 outperforms Claude Opus 5 in GPQA (0.898 vs 0.889), HLE (0.451 vs 0.413), and SciCode (0.582 vs 0.48). Claude Opus 5 maintains a slight edge in LCR benchmarks with a score of 0.693 compared to 0.633 for Muse Spark 1.1. Math indices remain unknown for both models.

Cost and Speed

Muse Spark 1.1 is significantly more cost-effective, with a blended price of $2.00/1M tokens, compared to $10.00/1M for Claude Opus 5. Specifically, Muse Spark 1.1 costs $1.25/1M input and $4.25/1M output, while Claude Opus 5 costs $5.00/1M input and $25.00/1M output.

Performance speed also favors Meta’s model. Muse Spark 1.1 delivers an output speed of 123.879 tok/s with a time to first token of 1.023s. Claude Opus 5 operates at 46.69 tok/s with a time to first token of 2.763s.

Best Fit

Muse Spark 1.1 is best suited for high-volume agentic tasks where cost-efficiency and low latency are critical. Claude Opus 5 is positioned as an adaptive reasoning tool, suitable for complex tasks where its specific architectural strengths may be required despite the higher price point.