DeepSeek V4.1 Flash vs GLM 5.3
API pricing, context window and capabilities for DeepSeek V4.1 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 numbersDeepSeek V4.1 Flash wins on price. GLM 5.3 wins on intelligence. Benchmark data is unavailable for one or both models.
Price
DeepSeek V4.1 Flash
Terminal-Bench
Not called
Intelligence
GLM 5.3
Context window
Tied
Key takeaways
who wins on what, from the published numbersDeepSeek V4.1 Flash wins
- Cheaper input ($0.01 vs $0.079 /1M)
- Cheaper output ($0.60 vs $3.08 /1M)
GLM 5.3 wins
- More serving providers (12 vs 16)
Cheaper overall
DeepSeek V4.1 Flash
$0.01 + $0.60 /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.
| DeepSeek V4.1 Flash | GLM 5.3 | |
|---|---|---|
| Input $/1M | $0.01via Coralbricks best | $0.079OpenRouter routed quote |
| Output $/1M | $0.60via Sail best | $3.08via Sail |
| Context window | 1M | 1M |
| Max output | 1M | 1M |
| Serving providers | 12 | 16 best |
| Date | Released Sep 10, 2026 | Released Aug 14, 2026 |
Benchmarks
Benchmark scores, side by side| DeepSeek V4.1 Flash | GLM 5.3 | |
|---|---|---|
| Intelligence | 39.5 | 44.8 best |
| Terminal-Bench | Not available | 84% |
| GPQA Diamond | Not available | 92% |
| Output speed | 187 t/s best | 62 t/s |
| Latency (TTFT) | 0.96s best | 3.50s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
DeepSeek V4.1 Flash
via Coralbricks
$1.25
GLM 5.3
via OpenRouter
$5.20
Capabilities
feature support, side by side| Feature | DeepSeek V4.1 Flash | GLM 5.3 |
|---|---|---|
| Vision | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, DeepSeek V4.1 Flash or GLM 5.3?
DeepSeek V4.1 Flash is cheaper for input ($0.01 vs $0.079 per 1M tokens) from Coralbricks. DeepSeek V4.1 Flash is cheaper for output ($0.60 vs $3.08 per 1M tokens) from Sail.
What is the context window difference between DeepSeek V4.1 Flash and GLM 5.3?
Both DeepSeek V4.1 Flash and GLM 5.3 have about a 1M-token context window.
How do DeepSeek V4.1 Flash and GLM 5.3 compare on benchmarks?
On the tracked benchmarks, GLM 5.3 leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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