2 vs 1 benchmarks won
Anthropic Claude Opus 4.6 | Meta Muse Spark | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Meta |
| Release date | Feb 5 2026 | Apr 8 2026 |
| Model type | — | — |
| Open source | No | No |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science reasoning GPQA Diamond | 91.3% | 89.5% |
Software engineering SWE-Bench Verified | 80.8% | 77.4% |
Multimodal understanding MMMU | — | 80.4% |
| Timeline | ||
| Release gap | Claude Opus 4.6 shipped 62 days before Muse Spark | |
Claude Opus 4.6 leads Muse Spark on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Opus 4.6 shipped 62 days before Muse Spark, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
On GPQA Diamond, Claude Opus 4.6 scores 91.3%, 1.8 points above Muse Spark at 89.5%. On SWE-Bench Verified, Claude Opus 4.6 scores 80.8%, 3.4 points above Muse Spark at 77.4%.