Standard Compute
Model comparison 2026

DeepSeek V4.1 Flash vs GPT-5.6 Sol

DeepSeek V4.1 Flash
DeepSeek · Budget · Open weights
$0.22/1M · 1.0M ctx
GPT-5.6 Sol
OpenAI · Frontier · Proprietary
$4.40/1M · 1.1M 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
GPT-5.6 Sol
Maker
DeepSeek
OpenAI
Blended price / 1M
$0.22
$4.40
Input / output
$0.04 in · $0.63 out / 1M tokens
$2.00 in · $10 out / 1M tokens
Context window
1.0M
1.1M
Open weights
Yes
No
Tool use
Yes
Yes
Reasoning
Yes
Yes
Output Quality
8.8
9.5
Agentic Ability
8.8
9.4
Speed
9.4
7.4
Value for money
10.0
7.8
Reliability
8.8
9.3

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

Verdict: DeepSeek V4.1 Flash or GPT-5.6 Sol?

Updated 2026-10-13

Choose DeepSeek V4.1 Flash if you want cheap, high-volume open-weight agent work. Choose GPT-5.6 Sol if you want hard coding and research tasks for teams in the OpenAI ecosystem.

In our editorial scoring, GPT-5.6 Sol leads in 3 of five dimensions (output quality, agentic ability and reliability), while DeepSeek V4.1 Flash leads in 2. On price, DeepSeek V4.1 Flash runs about $0.22 per 1M tokens (blended) and is open-weight; GPT-5.6 Sol is about $4.40 and proprietary.

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 GPT-5.6 Sol falls short
  • Superseded by GPT-6.1 Sol, which scores well above it on agent benchmarks
  • Slower and pricier than Terra for routine work
Full GPT-5.6 Sol breakdown →

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