Source ledger · 10 entries

The evidence behind this Muse Code guide.

Sources are ordered by provenance, not by whether they support a positive or negative reading. Community links are discovery and experience evidence, not controlled facts.

Checked 06 Aug 2026

Complete ledger

Every external link opens in a new tab and carries the site’s nofollow policy.
IDClassSourceDateUse and qualification
S01OfficialMeet Muse Spark 1.2 and Muse Code ↗
Meta AI Developers
05 Aug 2026Primary release, installation, model IDs, pricing, context window, cookbooks, and isolated-worktree fan-out.
S02OfficialIntroducing Muse Code and Muse Spark 1.2 ↗
Meta AI Research
05 Aug 2026Primary architecture, training, long-horizon, event-log, bundled-skill, and kernel-case-study claims.
S03OfficialMuse Code product page ↗
Meta AI Developers
Checked 06 Aug 2026Current product access point and documentation path.
S04OfficialMuse Spark 1.2 model page ↗
Meta AI Developers
Checked 06 Aug 2026Current model identity and access point.
S05Official methodologyMuse Spark 1.2 methodology report ↗
Meta AI Research
05 Aug 2026Evaluation details needed to interpret company-reported charts.
S06Independent methodologyTerminal-Bench 2.1 release notes ↗
Terminal-Bench
05 May 2026Benchmark task revisions and known dependency issues; scores depend on the agent-model configuration.
S07Independent leaderboardTerminal-Bench 2.1 leaderboard ↗
Terminal-Bench
Checked 06 Aug 2026Live external leaderboard. Entries can change and must be compared by model, agent, effort, date, and cost.
S08CommunityMuse Code beta launch summary ↗
r/machinelearningnews
05 Aug 2026User-supplied discussion. Useful for discovery; material claims are traced back to Meta sources.
S09CommunityMuse Spark 1.2 early reactions ↗
r/opencodeCLI
05 Aug 2026Anecdotal discussion of price, regional access, switching costs, and early task experience.
S10CommunityMuse Spark 1.2 launch skepticism ↗
r/MetaAI
05 Aug 2026Anecdotal questions about benchmark breadth and predecessor behavior.

Known evidence gaps

What is intentionally missing.

  • No hands-on Muse Code repository test has been run by this site.
  • No independent Muse Spark 1.2 aggregate score is quoted without a stable versioned source.
  • No product availability is inferred beyond Meta’s current macOS and Linux statement.
  • No community comment is treated as representative user research.

Read the evidence policy →