Meta Muse Spark via OpenCode Zen · Muse Spark 1.3 Contributor Free — limited-time promo
Zen Muse Spark 1.3 Free promo — price, limits, access route
$0 for input, cache, and output tokens during the promo window. Renewal: There is no renewal because there is no paid plan here — it is a $0 limited-time promo on input, cache, and output. Treat anything you build on it as rented time: confirm the promo window and the post-promo price before depending on it. All figures verified 2026-09-07. Re-verify at official terms before paying.
Specification
| Price | $0 for input, cache, and output tokens (promo window) |
|---|---|
| Est. cost per task | $0.00 while the promo lasts |
| Key limits | Limited-time promo; exact-string entry; unpublished throughput caps |
| Renewal | None — a promo, not a plan |
| End date | Not published — visible inside the official product only |
| Verified | 2026-09-06 |
Caveats
- Limited-time promo: $0 today can become metered tomorrow, with the end date visible only in-product
- Exact-string requirement: only “Muse Spark 1.3 Contributor Free” is free — a near-identical paid entry may sit one row away
- No price lock: there is nothing to renew and no grandfathering to assume
- Route-dependent: the /connect → Zen → /models path is the documented access; if the UI changes, the promo may be unreachable
Summary
If you can see the exact string “Muse Spark 1.3 Contributor Free” under /connect → Zen → /models, use it at $0 for input, cache, and output while the promo lasts. In short: great for evaluation, prototyping, and light tasks today; a bad foundation for anything you cannot migrate in a day, because the promo ends on the provider's schedule, not yours.
Price and renewal
- Current price
- $0 for input, cache, and output tokens during the promo window
- Renewal
- No renewal — this is a limited-time promo, not a plan. When it ends, usage moves to whatever paid terms apply, so confirm before building on it.
- Expiry
- Limited-time promo — end date confirmed only inside the official product; re-verify before relying on it.
Gifting this offer
Free route — there is nothing to buy. The gift is the introduction: the recipient activates it on their own account, where quotas are account-variable, so they should measure it in their first session.
Eligibility and access route
- Users who can reach the Zen section of the official product and see the promo model listed
- Must select the exact string “Muse Spark 1.3 Contributor Free” — similarly named paid entries bill normally
- Promo availability may vary by account, region, or app version
Access route: Inside the official product, navigate /connect → Zen → /models and select the exact string “Muse Spark 1.3 Contributor Free”. Do not guess at similarly named entries — only that exact string carries the $0 promo.
Limits and restrictions
- $0 covers input, cache, and output tokens under the promo — the full meter, not a slice
- Throughput and concurrency limits are unpublished in the snapshot; expect free-tier shaping at peak
- Promo may differ by account, region, or app version — a friend seeing it does not guarantee you see it
- Anything stateful you build (fine-tunes, cached pipelines) should be portable before the window closes
Restrictions on record
- Limited-time promo — the $0 rate can end without notice outside the official window
- Only the exact “Muse Spark 1.3 Contributor Free” string is $0; nearby model names may be paid
- Reasonable-use gating may apply even at $0; it is free, not unlimited
- No renewal or price lock — post-promo terms are whatever the provider publishes next
Access steps (official links only)
- Open the official product and navigate the exact path: /connect → Zen → /models.
- Find the entry spelled exactly “Muse Spark 1.3 Contributor Free” — character for character.
- Confirm the $0 input / cache / output terms shown in-product and note any promo window dates before running real work.
- Start with portable work (evals, prototypes) so a promo end does not strand anything load-bearing.
Official links
- OpenCode Zen docs — promo listing (official)Official Zen documentation confirming the limited-time $0 Contributor Free promo, checked Sep 7 2026. Activation still happens in-product: /connect → Zen → /models, then select the exact string “Muse Spark 1.3 Contributor Free”.
The economics: free during the promo, metered later
During the promo the effective cost per task is $0, which beats every paid route at any volume — including the $0.80/task PAYG reference and the $40/mo subscription (break-even: 50 tasks).
The accurate comparison is against the promo's expected lifespan. If you expect 200 tasks before the window closes, that is ~$160 of avoided PAYG spend — real money, but one-time.
Do not annualize free: a $39/mo membership decision should be made on post-promo prices, with the promo treated as a free trial of arbitrary length.
Migration cost is the hidden line item. Keep prompts, evals, and outputs provider-portable so the end of the promo costs you an afternoon, not a rewrite.
| Figure | Value |
|---|---|
| Promo price | $0 in / cache / out |
| Renewal | None — limited-time promo |
| Equal-value PAYG avoided | ~$0.80/task (illustrative) |
| 200 promo tasks ≈ | ~$160 avoided PAYG |
| Post-promo price | Unpublished — confirm in-product |
| Median-window math · verified 2026-09-07 · re-verify at official terms | |
Evidence and confidence
high confidence
$0 input/cache/output and the /connect → Zen → /models access path with the exact promo string are stated on the official OpenCode Zen docs page; the in-product listing was captured Sep 6 2026.
Source: OpenCode Zen docs (opencode.ai/docs/zen/), accessed Sep 7 2026; in-product snapshot Sep 6 2026
medium confidence
The promo is limited-time, but the end date is confirmed only inside the official product — this page states the limit without inventing a date.
Source: Snapshot Sep 6 2026; window not published as a fixed date
low confidence
Avoided-spend figures use the illustrative $0.80/task reference, not the provider's post-promo price, which is unpublished.
Source: Token Perks calculation; illustrative only
FAQ
Is Muse Spark 1.3 really free?
The Contributor Free promo is $0 for input, cache, and output tokens while it lasts. It is a limited-time promo, not a free-forever plan — confirm the window in-product before depending on it.
How do I find the free entry?
Navigate /connect → Zen → /models inside the official product and select the exact string “Muse Spark 1.3 Contributor Free”. Similarly named entries may be paid, so match the string exactly.
What happens when the promo ends?
Usage moves to whatever paid terms the provider publishes — this page does not guess at them. Keep your work portable so the transition costs an afternoon, not a rewrite.
Should I skip a paid plan and just use this?
Use it for evaluation and portable work during the promo window, but make paid-plan decisions on post-promo prices. If your volume clears ~50 tasks/mo at $0.80/task, a $40-class subscription is the durable answer.
How current is this information?
Research snapshot Sep 6 2026. Promo availability changes fast — re-verify in the official product before paying or planning around it.
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Cite this page
Token Perks. “OpenCode Zen Muse Spark 1.3 free promo.” Research snapshot Sep 7 2026. https://token-perks.com/best/muse-spark-zen-free/. Re-verify at official terms before paying.
CC-BY-4.0 with attribution. Includes the snapshot date so readers know how fresh the numbers are.