feat(models): add Muse Spark 1.3

[waleedlatif1]

Summary

• Add muse-spark-1.3 to the Meta provider — $1.25/$0.15/$4.25 per 1M input/cached/output, 1,048,576-token context, reasoning effort minimal | low | medium | high | xhigh, released 2026-09-02
• Promote it to the provider defaultModel and recommended flagship; muse-spark-1.1 stays available but drops the recommended flag
• Regenerate the Agent block streamed-thinking docs table

Values verified against Meta's Model API docs (models index, pricing/rate-limits, reasoning) and cross-checked with OpenRouter. Meta stays BYOK-only — getHostedModels() doesn't expand the provider, so no hosted-billing change. No max output token cap is documented, so maxOutputTokens is omitted.

Type of Change

• New feature

Testing

• bun run lint
• bun run type-check
• bun run check:audits — 45/45 pass (incl. agent-stream-docs:check)
• vitest run providers/models.test.ts providers/utils.test.ts — 219 pass

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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Project	Deployment	Actions	Updated
docs	Ready	Preview	Sep 2, 2026 9:05pm UTC

[greptile-apps]

Greptile Summary

The PR adds Muse Spark 1.3 to the Meta provider and makes it Meta’s recommended default model.

• Defines pricing, context size, reasoning-effort options, and release metadata for muse-spark-1.3.
• Keeps Muse Spark 1.1 available while removing its recommended designation.
• Regenerates the Agent documentation to list the new model under Meta’s non-streamed reasoning models.

Confidence Score: 5/5

The PR appears safe to merge with no actionable correctness, security, or maintainability issues identified.

The new model follows the existing Meta routing and capability flow, remains correctly scoped to BYOK use, and the generated documentation matches the provider’s established stream-visibility behavior.

Important Files Changed

Filename	Overview
apps/sim/providers/models.ts	Adds the Muse Spark 1.3 catalog entry and consistently promotes it to Meta’s default and recommended model without altering hosted-model availability.
apps/docs/content/docs/workflows/blocks/agent.mdx	Updates the generated streamed-thinking table consistently with Meta’s provider-level non-streamed classification.

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[waleedlatif1]

@cubic-dev-ai review this PR

[cubic-dev-ai]

@cubic-dev-ai review this PR

@waleedlatif1 I have started the AI code review. It will take a few minutes to complete.

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Re-trigger cubic}