DeepSeek V4.1 Flash vs GLM 5.3 Flash
API pricing, context window and capabilities for DeepSeek V4.1 Flash and GLM 5.3 Flash, side by side. Prices are the cheapest listed serving route per 1M tokens, from LiteLLM and OpenRouter.
Verdict
computed from the published numbersGLM 5.3 Flash wins on intelligence. Benchmark data is unavailable for one or both models.
Price
Tied
Terminal-Bench
Not called
Intelligence
GLM 5.3 Flash
Context window
Tied
Key takeaways
who wins on what, from the published numbersDeepSeek V4.1 Flash wins
- Cheaper input ($0.01 vs $0.11 /1M)
GLM 5.3 Flash wins
- Cheaper output ($0.60 vs $0.35 /1M)
- More serving providers (12 vs 13)
Cheaper overall
GLM 5.3 Flash
$0.11 + $0.35 /1M
Larger context
Tied
More providers
GLM 5.3 Flash
13 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.
| DeepSeek V4.1 Flash | GLM 5.3 Flash | |
|---|---|---|
| Input $/1M | $0.01via Coralbricks best | $0.11via Sail |
| Output $/1M | $0.60via Sail | $0.35via Sail best |
| Context window | 1M | 1M |
| Max output | 1M | 1M |
| Serving providers | 12 | 13 best |
| Date | Released Sep 10, 2026 | Released Aug 26, 2026 |
Benchmarks
Benchmark scores, side by side| DeepSeek V4.1 Flash | GLM 5.3 Flash | |
|---|---|---|
| Intelligence | 39.5 | 41.8 best |
| Terminal-Bench | Not available | 84% |
| GPQA Diamond | Not available | 91% |
| Output speed | 187 t/s best | 67 t/s |
| Latency (TTFT) | 0.96s best | 2.80s |
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 Flash
via Sail
$0.90
Capabilities
feature support, side by side| Feature | DeepSeek V4.1 Flash | GLM 5.3 Flash |
|---|---|---|
| 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 Flash?
DeepSeek V4.1 Flash is cheaper for input ($0.01 vs $0.11 per 1M tokens) from Coralbricks. GLM 5.3 Flash is cheaper for output ($0.60 vs $0.35 per 1M tokens) from Sail.
What is the context window difference between DeepSeek V4.1 Flash and GLM 5.3 Flash?
Both DeepSeek V4.1 Flash and GLM 5.3 Flash have about a 1M-token context window.
How do DeepSeek V4.1 Flash and GLM 5.3 Flash compare on benchmarks?
On the tracked benchmarks, GLM 5.3 Flash leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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