GLM 5.3 vs Muse Spark 1.3
API pricing, context window and capabilities for GLM 5.3 and Muse Spark 1.3, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGLM 5.3 wins on price. Muse Spark 1.3 wins on intelligence.
Price
GLM 5.3
Terminal-Bench
Tied
Intelligence
Muse Spark 1.3
Context window
Tied
Key takeaways
who wins on what, from the published numbersGLM 5.3 wins
- Cheaper input ($0.079 vs $1.25 /1M)
- Cheaper output ($3.08 vs $4.25 /1M)
- Higher max output (1M vs 131K)
- More serving providers (16 vs 4)
Muse Spark 1.3 wins
- Has web search
Cheaper overall
GLM 5.3
$0.079 + $3.08 /1M
Larger context
Tied
More providers
GLM 5.3
16 providers
Pricing & specs
cheapest listed route · per 1M tokensOn-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments can be materially lower. An OpenRouter routed quote is the price of whichever upstream provider OpenRouter prefers today, so it moves day to day.
| GLM 5.3 | Muse Spark 1.3 | |
|---|---|---|
| Input $/1M | $0.079OpenRouter routed quote best | $1.25via Azure |
| Output $/1M | $3.08via Sail best | $4.25via Azure |
| Context window | 1M | 1M |
| Max output | 1M best | 131K |
| Serving providers | 16 best | 4 |
| Date | Released Aug 14, 2026 | Released Sep 2, 2026 |
Benchmarks
Benchmark scores, side by side| GLM 5.3 | Muse Spark 1.3 | |
|---|---|---|
| Intelligence | 44.8 | 48.1 best |
| Terminal-Bench | 84% | 84% |
| GPQA Diamond | 92% | 94% best |
| Output speed | 62 t/s | 128 t/s best |
| Latency (TTFT) | 3.50s best | 41.69s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GLM 5.3
via OpenRouter
$5.20
Muse Spark 1.3
via Meta
$11
Capabilities
feature support, side by side| Feature | GLM 5.3 | Muse Spark 1.3 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | ✓ |
Related comparisons
Frequently asked questions
Which is cheaper, GLM 5.3 or Muse Spark 1.3?
GLM 5.3 is cheaper for input ($0.079 vs $1.25 per 1M tokens) as an OpenRouter routed quote. GLM 5.3 is cheaper for output ($3.08 vs $4.25 per 1M tokens) from Sail.
What is the context window difference between GLM 5.3 and Muse Spark 1.3?
Both GLM 5.3 and Muse Spark 1.3 have about a 1M-token context window.
How do GLM 5.3 and Muse Spark 1.3 compare on benchmarks?
On the tracked benchmarks, they score about the same on Terminal-Bench, and Muse Spark 1.3 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Sep 28, 2026
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