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 listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGLM 5.2 wins on price, on Terminal-Bench and on intelligence.
Price
GLM 5.2
Terminal-Bench
GLM 5.2
Intelligence
GLM 5.2
Context window
Tied
Key takeaways
who wins on what, from the published numbersGemini 3.1 Pro Preview wins
- Supports audio
- Has web search
GLM 5.2 wins
- Cheaper input ($2.00 vs $0.05 /1M)
- Cheaper output ($12.00 vs $1.98 /1M)
- Higher max output (66K vs 1M)
- More serving providers (6 vs 20)
Cheaper overall
GLM 5.2
$0.05 + $1.98 /1M
Larger context
Tied
More providers
GLM 5.2
20 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.
| Gemini 3.1 Pro Preview | GLM 5.2 | |
|---|---|---|
| Input $/1M | $2.00via Google | $0.05OpenRouter routed quote best |
| Output $/1M | $12.00via Google | $1.98via Scx AI best |
| Context window | 1M | 1M |
| Max output | 66K | 1M best |
| Serving providers | 6 | 20 best |
| Date | Released Feb 19, 2026 | Released Jun 13, 2026 |
Benchmarks
Benchmark scores, side by side| Gemini 3.1 Pro Preview | GLM 5.2 | |
|---|---|---|
| Intelligence | 29.7 | 33.7 best |
| Terminal-Bench | 74% | 78% best |
| GPQA Diamond | 94% best | 89% |
| Output speed | 140 t/s best | 83 t/s |
| Latency (TTFT) | 26.52s | 2.97s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Gemini 3.1 Pro Preview
via Google
$22
GLM 5.2
via OpenRouter
$7.25
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 $0.05 per 1M tokens) as an OpenRouter routed quote. GLM 5.2 is cheaper for output ($12.00 vs $1.98 per 1M tokens) from Scx AI.
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 benchmarks, GLM 5.2 leads on Terminal-Bench, and GLM 5.2 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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