Gemini 3.7 Flash vs GLM 5.3
API pricing, context window and capabilities for Gemini 3.7 Flash and GLM 5.3, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGemini 3.7 Flash wins on Terminal-Bench. GLM 5.3 wins on price and on intelligence.
Price
GLM 5.3
Terminal-Bench
Gemini 3.7 Flash
Intelligence
GLM 5.3
Context window
Tied
Key takeaways
who wins on what, from the published numbersGemini 3.7 Flash wins
- Supports audio
- Has web search
GLM 5.3 wins
- Cheaper input ($0.75 vs $0.079 /1M)
- Cheaper output ($3.75 vs $3.08 /1M)
- Higher max output (66K vs 1M)
- More serving providers (7 vs 16)
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.
| Gemini 3.7 Flash | GLM 5.3 | |
|---|---|---|
| Input $/1M | $0.75via Google | $0.079OpenRouter routed quote best |
| Output $/1M | $3.75via Google | $3.08via Sail best |
| Context window | 1M | 1M |
| Max output | 66K | 1M best |
| Serving providers | 7 | 16 best |
| Date | Released Aug 14, 2026 | Released Aug 14, 2026 |
Benchmarks
Benchmark scores, side by side| Gemini 3.7 Flash | GLM 5.3 | |
|---|---|---|
| Intelligence | 39.1 | 44.8 best |
| Terminal-Bench | 86% best | 84% |
| GPQA Diamond | 95% best | 92% |
| Output speed | 318 t/s best | 62 t/s |
| Latency (TTFT) | 8.87s | 3.50s best |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
Gemini 3.7 Flash
via Vertex AI Language Models
$7.50
GLM 5.3
via OpenRouter
$5.20
Capabilities
feature support, side by side| Feature | Gemini 3.7 Flash | GLM 5.3 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | ✓ | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, Gemini 3.7 Flash or GLM 5.3?
GLM 5.3 is cheaper for input ($0.75 vs $0.079 per 1M tokens) as an OpenRouter routed quote. GLM 5.3 is cheaper for output ($3.75 vs $3.08 per 1M tokens) from Sail.
What is the context window difference between Gemini 3.7 Flash and GLM 5.3?
Both Gemini 3.7 Flash and GLM 5.3 have about a 1M-token context window.
How do Gemini 3.7 Flash and GLM 5.3 compare on benchmarks?
On the tracked benchmarks, Gemini 3.7 Flash leads on Terminal-Bench, and GLM 5.3 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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