Gemini 3.1 Pro Preview vs GLM 5.2
API pricing, context window and capabilities for Gemini 3.1 Pro Preview and GLM 5.2, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersGLM 5.2 wins on price and on intelligence.
Price
GLM 5.2
Coding
Tied
Intelligence
GLM 5.2
Context window
Tied
Key takeaways
who wins on what, from the published numbersGemini 3.1 Pro Preview wins
- Supports vision
- Supports audio
- Has web search
GLM 5.2 wins
- Cheaper input ($2.00 vs $0.61 /1M)
- Cheaper output ($12.00 vs $1.98 /1M)
- Higher max output (66K vs 262K)
- More serving providers (4 vs 10)
Cheaper overall
GLM 5.2
$0.61 + $1.98 /1M
Larger context
Tied
More providers
GLM 5.2
10 providers
Pricing & specs
cheapest serving route · per 1M tokens| Gemini 3.1 Pro Preview | GLM 5.2 | |
|---|---|---|
| Input $/1M | $2.00 | $0.61 best |
| Output $/1M | $12.00 | $1.98 best |
| Context window | 1M | 1M |
| Max output | 66K | 262K best |
| Serving providers | 4 | 10 best |
| Released | 2026-02-19 | 2026-06-13 |
Benchmarks
Artificial Analysis indices, side by side| Gemini 3.1 Pro Preview | GLM 5.2 | |
|---|---|---|
| Intelligence | 47.7 | 52.6 best |
| Coding | 68.8 | 68.8 |
| GPQA Diamond | 94% best | 89% |
| Output speed | 115 t/s best | 71 t/s |
| Latency (TTFT) | 24.09s | 1.59s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Gemini 3.1 Pro Preview
via Vertex AI
$22
GLM 5.2
via Scx AI
$5.03
Capabilities
feature support, side by side| Feature | Gemini 3.1 Pro Preview | GLM 5.2 |
|---|---|---|
| Vision | ✓ | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | ✓ | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Gemini 3.1 Pro Preview or GLM 5.2?
GLM 5.2 is cheaper for input ($2.00 vs $0.61 per 1M tokens). GLM 5.2 is cheaper for output ($12.00 vs $1.98 per 1M tokens).
What is the context window difference between Gemini 3.1 Pro Preview and GLM 5.2?
Both Gemini 3.1 Pro Preview and GLM 5.2 have about a 1M-token context window.
How do Gemini 3.1 Pro Preview and GLM 5.2 compare on benchmarks?
On the tracked Artificial Analysis indices, they score about the same on coding, and GLM 5.2 leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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