DeepSeek V4.1 Flash vs DeepSeek V4 Pro 0423
API pricing, context window and capabilities for DeepSeek V4.1 Flash and DeepSeek V4 Pro 0423, 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 and on intelligence. Benchmark data is unavailable for one or both models.
Price
DeepSeek V4.1 Flash
Terminal-Bench
Not called
Intelligence
DeepSeek V4.1 Flash
Context window
Tied
Key takeaways
who wins on what, from the published numbersDeepSeek V4.1 Flash wins
- Cheaper input ($0.01 vs $0.435 /1M)
- Cheaper output ($0.60 vs $0.87 /1M)
- Supports vision
DeepSeek V4 Pro 0423 wins
- More serving providers (12 vs 16)
Cheaper overall
DeepSeek V4.1 Flash
$0.01 + $0.60 /1M
Larger context
Tied
More providers
DeepSeek V4 Pro 0423
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.
| DeepSeek V4.1 Flash | DeepSeek V4 Pro 0423 | |
|---|---|---|
| Input $/1M | $0.01via Coralbricks best | $0.435via Tencent |
| Output $/1M | $0.60via Sail best | $0.87via Tencent |
| Context window | 1M | 1M |
| Max output | 1M | 1M |
| Serving providers | 12 | 16 best |
| Date | Released Sep 10, 2026 | Released Apr 24, 2026 |
Benchmarks
Benchmark scores, side by side| DeepSeek V4.1 Flash | DeepSeek V4 Pro 0423 | |
|---|---|---|
| Intelligence | 39.5 best | 30.4 |
| Terminal-Bench | Not available | 65% |
| GPQA Diamond | Not available | 89% |
| Output speed | 187 t/s best | 100 t/s |
| Latency (TTFT) | 0.96s best | 1.64s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
DeepSeek V4.1 Flash
via Coralbricks
$1.25
DeepSeek V4 Pro 0423
via Tencent
$3.04
Capabilities
feature support, side by side| Feature | DeepSeek V4.1 Flash | DeepSeek V4 Pro 0423 |
|---|---|---|
| Vision | ✓ | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Web search | — | — |
Related comparisons
Frequently asked questions
Which is cheaper, DeepSeek V4.1 Flash or DeepSeek V4 Pro 0423?
DeepSeek V4.1 Flash is cheaper for input ($0.01 vs $0.435 per 1M tokens) from Coralbricks. DeepSeek V4.1 Flash is cheaper for output ($0.60 vs $0.87 per 1M tokens) from Sail.
What is the context window difference between DeepSeek V4.1 Flash and DeepSeek V4 Pro 0423?
Both DeepSeek V4.1 Flash and DeepSeek V4 Pro 0423 have about a 1M-token context window.
How do DeepSeek V4.1 Flash and DeepSeek V4 Pro 0423 compare on benchmarks?
On the tracked benchmarks, DeepSeek V4.1 Flash leads on intelligence.
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026
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