Claude Sonnet 5 vs Muse Spark 1.1
Anthropic Claude Sonnet 5 | Meta Muse Spark 1.1 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Meta |
| Release date | Jun 30 2026 | Jul 9 2026 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | 63.2%Best | 61.5% |
Agentic coding CursorBench v3.1Cursor's own test of harder, real-world coding tasks inside a code editor. Higher is better. | 61.2% | — |
Agentic coding DeepSWE 1.1Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | — | 53.3% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | 80.4%Best | 80% |
Multi-step tool use MCP AtlasCan the AI chain together many tools and steps to complete one bigger task, rather than doing just a single thing? Higher is better. | — | 88.1% |
Professional tool use JobBenchTests the AI on professional workplace tasks that require using real work tools — the kind of multi-step jobs an office worker handles. Higher is better. | — | 54.7% |
Personal tool use Toolathlon-VerifiedTests how well the AI uses everyday personal tools and apps to get things done — a human-checked version of Toolathlon. Higher is better. | — | 75.6% |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | 43.2% | — |
Multidisciplinary reasoning Humanity's Last Exam · with toolsHumanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. | 57.4% | 62.1%Best |
Agentic computer use OSWorld-VerifiedCan the AI actually operate a computer — clicking, typing, and using real apps — to finish tasks on its own? Higher is better. | 81.2%Best | 80.8% |
Agentic financial analysis Finance Agent v2Tests the AI on real financial-analysis work, like digging through reports and making sound decisions. Higher is better. | — | 57.2% |
Knowledge work GDPval-AAMeasures how well the AI does economically valuable knowledge work, judged against human experts. Shown as a rating (like a chess Elo) — higher is better. | 1618 | — |
Chart reasoning CharXiv ReasoningCan the AI read and reason about complex charts and figures, not just text? Higher is better. | — | 88.4% |
Visual reasoning BabyVisionTests core visual reasoning — seeing and understanding images the way even young children can, which AIs often find surprisingly hard. Higher is better. | — | 76.3% |
| Timeline | ||
| Release gap | Claude Sonnet 5 shipped 9 days before Muse Spark 1.1 | |
Which is better: Claude Sonnet 5 or Muse Spark 1.1?
Claude Sonnet 5 leads Muse Spark 1.1 on 3 of the 4 benchmarks they both report (SWE-Bench Pro, Terminal-Bench 2.1, Humanity's Last Exam, OSWorld-Verified). Claude Sonnet 5 shipped 9 days before Muse Spark 1.1, 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 SWE-Bench Pro, Claude Sonnet 5 leads at 63.2% vs Muse Spark 1.1 at 61.5%. On Terminal-Bench 2.1, Claude Sonnet 5 leads at 80.4% vs Muse Spark 1.1 at 80%. On Humanity's Last Exam · with tools, Muse Spark 1.1 leads at 62.1% vs Claude Sonnet 5 at 57.4%. On OSWorld-Verified, Claude Sonnet 5 leads at 81.2% vs Muse Spark 1.1 at 80.8%.
Frequently asked questions
Claude Sonnet 5 was released by Anthropic on Jun 30 2026.
Muse Spark 1.1 was released by Meta on Jul 9 2026.
Claude Sonnet 5 leads on SWE-Bench Pro — Claude Sonnet 5 63.2% vs Muse Spark 1.1 61.5%.
Muse Spark 1.1 leads on Humanity's Last Exam · with tools — Claude Sonnet 5 57.4% vs Muse Spark 1.1 62.1%.