Standard Compute
Model comparison 2026

DeepSeek V4.1 Flash vs DeepSeek V4 Pro

DeepSeek V4.1 Flash
DeepSeek · Budget · Open weights
$0.22/1M · 1.0M ctx
DeepSeek V4 Pro
DeepSeek · Frontier · Open weights
$0.57/1M · 1.0M ctx

Community vote

Pick a winner in each dimension. You can change your vote any time.

Output Quality
Correctness and depth of what it produces
Agentic Ability
Tool calls, instruction-following, and multi-step tasks
Speed
Tokens per second and time-to-first-token
Value for money
How much capability you get per dollar
Reliability
Consistent results: fewer refusals, loops and format breaks

Specs and pricing side by side

Spec
DeepSeek V4.1 Flash
DeepSeek V4 Pro
Maker
DeepSeek
DeepSeek
Blended price / 1M
$0.22
$0.57
Input / output
$0.04 in · $0.63 out / 1M tokens
$0.44 in · $0.87 out / 1M tokens
Context window
1.0M
1.0M
Open weights
Yes
Yes
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
8.8
8.9
Agentic Ability
8.8
9.0
Speed
9.4
7.4
Value for money
10.0
9.4
Reliability
8.8
8.8

Pricing and capabilities synced from the OpenRouter catalogue. Scores are editorial (0–10).

Verdict: DeepSeek V4.1 Flash or DeepSeek V4 Pro?

Updated 2026-10-13

Choose DeepSeek V4.1 Flash if you want cheap, high-volume open-weight agent work. Choose DeepSeek V4 Pro if you want cost-conscious agents that still want top-tier output.

Editorially it's close: each model leads in 2 of our five dimensions. On price, DeepSeek V4.1 Flash runs about $0.22 per 1M tokens (blended) and is open-weight; DeepSeek V4 Pro is about $0.57 and open-weight.

Where DeepSeek V4.1 Flash falls short
  • Well below the frontier on long agentic tasks
  • DeepSeek API prices differ between peak and off-peak hours
Full DeepSeek V4.1 Flash breakdown →
Where DeepSeek V4 Pro falls short
  • Tool-use polish behind the top closed models
  • Hosted throughput varies by provider
Full DeepSeek V4 Pro breakdown →

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