AI model comparison
GLM 5.3 vs Muse Spark 1.2
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
Z.ai
GLM 5.3
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks.
- Input / 1M
- $0.04
- Output / 1M
- $7
- Context
- 1.05M
Meta
Muse Spark 1.2
Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks.
- Input / 1M
- $1.25
- Output / 1M
- $4.25
- Context
- 1.05M
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
GLM 5.3
1.3x cheaper for a typical chat
Higher intelligence score
GLM 5.3
44.8 vs 39.6 on Artificial Analysis
Larger context window
Tie
1.05M vs 1.05M tokens
Newer release
GLM 5.3
Released August 18, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
Coding index
Agentic index
Pricing
GLM 5.3 vs Muse Spark 1.2 API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | ||
|---|---|---|
| Input tokensPer 1M tokens | $0.04 | $1.25 |
| Output tokensPer 1M tokens | $7 | $4.25 |
| Cached input (read)Per 1M tokens | $0.04 | $0.15 |
| Cache writePer 1M tokens | Not available | Not available |
| Web searchPer request | Not available | $0.0025 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
Coding task
30K in, 4K out
Long document summary
150K in, 2K out
Specs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | ||
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Max output | 944K tokens | 944K tokens |
| Input types | Text | File, Image, Text, Video |
| Output types | Text | Text |
| Reasoning effort levels | Max, High, Low | Extra high, High, Medium, Low, Minimal |
| Default reasoning effort | Max | Medium |
| Release date | August 18, 2026 | August 5, 2026 |
Features
Supported features
API features available for each model.
| Metric | ||
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Supported |
| Stop sequences | Supported | Not supported |
| Deterministic seed | Supported | Not supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- GLM 5.3 vs DeepSeek V4.1 Flash
- GLM 5.3 vs GLM 5.3 Flash
- GLM 5.3 vs MiMo-V2.6-Flash
- GLM 5.3 vs Hy4 preview
- GLM 5.3 vs GPT-6 Luna
- GLM 5.3 vs Claude Opus 5.5
- GLM 5.3 vs DeepSeek V4 Flash 0731
- GLM 5.3 vs Claude Sonnet 5.5
- GLM 5.3 vs GPT-6 Astra
- GLM 5.3 vs DeepSeek V4 Flash 0423
- GLM 5.3 vs GPT-6.1 Sol
- GLM 5.3 vs Step 5 Preview
- GLM 5.3 vs Gemini 3.8 Flash
- GLM 5.3 vs Hy3
- GLM 5.3 vs Muse Spark 1.3
- GLM 5.3 vs GPT-6 Sol
- GLM 5.3 vs Kimi K3
- GLM 5.3 vs GPT-5.6 Sol
- GLM 5.3 vs Grok 4.7
- GLM 5.3 vs MiMo-V2.6-Pro
- GLM 5.3 vs Qwen3.8 Max (0902)
- GLM 5.3 vs GLM 5.2
- GLM 5.3 vs Grok 4.6
- GLM 5.3 vs Claude Haiku 5.5
- GLM 5.3 vs GPT-5.6 Terra
- GLM 5.3 vs Claude Opus 4.8
- GLM 5.3 vs Ling 3.1 Flash
- GLM 5.3 vs Claude Opus 4.7
- GLM 5.3 vs Qwen3.8 2.4T A95B
- GLM 5.3 vs Gemini 3.7 Flash
- GLM 5.3 vs Grok 4.5
- Muse Spark 1.2 vs GLM 5.3 Flash
- Muse Spark 1.2 vs Gemini 3.8 Flash
- Muse Spark 1.2 vs Qwen3.8 2.4T A95B
- Muse Spark 1.2 vs Gemini 3.7 Flash
- Muse Spark 1.2 vs DeepSeek V4.1 Flash
- Muse Spark 1.2 vs Grok 4.5
- Muse Spark 1.2 vs Claude Sonnet 5
- Muse Spark 1.2 vs GPT-5.6 Luna
- Muse Spark 1.2 vs DeepSeek V4 Pro 0813
- Muse Spark 1.2 vs Muse Spark 1.1
Our take
GLM 5.3 is 1.3x cheaper for a typical chat. GLM 5.3 scores higher on the Artificial Analysis Intelligence Index (44.8 vs 39.6). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is GLM 5.3 or Muse Spark 1.2 cheaper?
GLM 5.3 is cheaper for a typical chat (2K input tokens and 500 output tokens). GLM 5.3 costs $0.04 per 1M input tokens and $7 per 1M output tokens, while Muse Spark 1.2 costs $1.25 per 1M input tokens and $4.25 per 1M output tokens.
Which has a bigger context window, GLM 5.3 or Muse Spark 1.2?
GLM 5.3 supports up to 1.05M tokens of context, compared with 1.05M for Muse Spark 1.2.
Is GLM 5.3 smarter than Muse Spark 1.2?
On the Artificial Analysis Intelligence Index, GLM 5.3 scores 44.8 and Muse Spark 1.2 scores 39.6, putting GLM 5.3 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use GLM 5.3 and Muse Spark 1.2 at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see GLM 5.3 and Muse Spark 1.2 answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to GLM 5.3 and Muse Spark 1.2 at the same time. Compare the answers side by side and keep the best one.