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DeepSeek V3.2 by DeepSeek Thinking

Chat with DeepSeek V3.2 for free

DeepSeek V3.2 offers a step-by-step thinking mode tuned for math, logic and structured problem solving. Start typing, no sign-up needed.

Free in ChatdaySwitch models any timeCompare with other models
Live preview

See how DeepSeek V3.2 thinks

Pick a task and watch a sample answer stream in. Open the same prompt in Chatday when you’re ready.

Why does this return undefined? const u = users.find(u => u.id = id)

The bug is in the arrow body: u.id = id assigns instead of compares, so the callback returns the assigned value and .find never matches the way you expect.

Fix it with a strict comparison:

const u = users.find(u => u.id === id);

Use === to compare. A single = is assignment, which is why you saw undefined.

Illustrative preview: your real answers run in Chatday. Continue in Chatday
Strengths

What makes DeepSeek V3.2 stand out

Step-by-step thinking mode
Strong math and logic
Transparent reasoning traces
At a glance

DeepSeek V3.2 specifications

128K
Context window
8K
Max output
Text · Code
Modality
Balanced
Speed
Free & Pro
Available in Chatday
ProviderDeepSeek
Model familyDeepSeek V3 series
Context window128,000 tokens
Max output8,000 tokens
ModalityText · Code
Input price$0.62 / 1M tokens
Output price$1.85 / 1M tokens
Tool / function callingYes
VisionNo
StreamingYes
Available in ChatdayFree & Pro

Pricing shown for reference; usage is included in your Chatday plan.

Side by side

DeepSeek V3.2 vs other top models

Compare
Model Context Best at Input price In Chatday
DeepSeek V3.2 128K Thinking $0.62/M Free
Claude Opus 4.8 1M Frontier coding $5/M Free
GPT-5.5 1M Flagship reasoning $5/M Free
Gemini 3.1 Pro 1M Multimodal $2/M Free
FAQ

DeepSeek V3.2 questions

Yes. DeepSeek V3.2 is available on the free plan with daily limits. Pro raises the limits and adds priority access during peak times.
128K tokens: enough for very long documents, large codebases or extended conversations without losing earlier context.
Reach for DeepSeek V3.2 on the tasks it’s built for, then switch models mid-chat in Chatday when another one fits better, no need to leave the conversation.
DeepSeek V3.2’s weights are publicly available, so it can be self-hosted, and you can also use it instantly, with no setup, inside Chatday.

Chat with DeepSeek V3.2 and switch models any time.

One subscription, every leading model. Start free in the Chatday web app.