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ModelCap

Head-to-head comparison

Muse Spark 1.3 vs GLM 5.3

Muse Spark 1.3 (Meta) and GLM 5.3 (Z.ai) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 9 September 2026

As of 9 September 2026, Muse Spark 1.3 holds the stronger ModelCap Index position (#2 vs #8); and Muse Spark 1.3 is cheaper per output token ($4.25/1M vs $4.40/1M).

Which should you choose?

Choose Muse Spark 1.3 if…

  • you want the stronger overall ModelCap Index position — #2 against #8 (88.7 vs 82.1 points).
  • API cost matters — $4.25/1M output tokens against $4.40/1M.
  • your workload is prompt-heavy — input tokens cost $1.25/1M against $1.40/1M.
  • AA Intelligence Index is your yardstick — 48.2 against 44.9.
  • AA Terminal-Bench 2.1 is your yardstick — 84.3% against 83.9%.
  • AA Humanity's Last Exam is your yardstick — 48.7% against 42.3%.
  • you want the more recently listed model — Muse Spark 1.3 was listed 2 September 2026, GLM 5.3 18 August 2026.

Choose GLM 5.3 if…

  • you want provider choice — 26 listed API providers against 1.

Muse Spark 1.3 vs GLM 5.3: specs, pricing and context

Specification comparison of Muse Spark 1.3 and GLM 5.3
FieldMuse Spark 1.3MetaGLM 5.3Z.ai
ModelCap Index position#2#8
Index score88.782.1
EvidenceMeasuredMeasured
Input price / 1M tokens$1.25$1.40
Output price / 1M tokens$4.25$4.40
Context window1M tokens1M tokens
Max output tokens944K944K
API providers listed126
Weight accessAPI onlyRestricted license
Input modalitiesText, Image, Video, File, AudioText
First listed2 September 202618 August 2026
PublisherMetaZ.ai

Evidence: 1 public benchmark observation across 1 board · 4 public benchmark observations across 4 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Muse Spark 1.3 vs GLM 5.3

Public benchmark boards where Muse Spark 1.3 or GLM 5.3 has a published result
BoardMuse Spark 1.3GLM 5.3Leads
Arena codingArena (LMArena)—15281514–1541MaxOnly one result
LMArena AgentLMArena—2.6%1.9%–3.2%MaxOnly one result
AA Intelligence IndexArtificial Analysis48.2intelligence-index:v4.3:max44.9intelligence-index:v4.3:maxMuse Spark 1.3
AA Terminal-Bench 2.1Artificial Analysis84.3%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="Muse Spark 1.3 (max)":reasoning=true83.9%terminal-bench:2.1:terminus-2:e2b:pass-at-1:3-repeats:source-model="GLM-5.3 (max)":reasoning=trueMuse Spark 1.3
AA Humanity's Last ExamArtificial Analysis48.7%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="Muse Spark 1.3 (max)":reasoning=true42.3%hle:may-2025:text-only-2158:no-tools:pass-at-1:source-model="GLM-5.3 (max)":reasoning=trueMuse Spark 1.3
Terminal-Bench 4.0Terminal-Bench (Laude Institute)—41.8%38.6%–45.1%Claude Code · MaxOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Muse Spark 1.3 vs GLM 5.3: common questions

Is Muse Spark 1.3 better than GLM 5.3?

Muse Spark 1.3 ranks higher on the ModelCap Index as of 9 September 2026: #2 against #8. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.

Is Muse Spark 1.3 cheaper than GLM 5.3?

Muse Spark 1.3 is cheaper on output tokens: $4.25/1M against $4.40/1M. Input tokens are $1.25/1M for Muse Spark 1.3 and $1.40/1M for GLM 5.3. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $4.63 for Muse Spark 1.3 versus $5.00 for GLM 5.3. Muse Spark 1.3 costs 7.5% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.

Which has the bigger context window, Muse Spark 1.3 or GLM 5.3?

Both publish a 1M-token context window.

Which is better for coding, Muse Spark 1.3 or GLM 5.3?

AA Terminal-Bench 2.1: Muse Spark 1.3 84.3%, GLM 5.3 83.9% — Muse Spark 1.3 leads.

Are Muse Spark 1.3 and GLM 5.3 open-weight models?

Muse Spark 1.3: API only. GLM 5.3: Restricted license. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Muse Spark 1.3 and GLM 5.3?

ModelCap currently lists 1 API provider for Muse Spark 1.3 and 26 for GLM 5.3, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Muse Spark 1.3 vs GLM 5.3 comparison?

Every figure comes from the sealed ModelCap dataset published 9 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

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