Model Comparison

DeepSeek-V3.2 (Thinking) vs Grok 4 Fast

DeepSeek-V3.2 (Thinking) shows notably better performance in the majority of benchmarks. Grok 4 Fast is 1.1x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

DeepSeek-V3.2 (Thinking) outperforms in 4 benchmarks (AIME 2025, BrowseComp, Humanity's Last Exam, LiveCodeBench), while Grok 4 Fast is better at 2 benchmarks (GPQA, HMMT 2025).

DeepSeek-V3.2 (Thinking) shows notably better performance in the majority of benchmarks.

Mon May 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok 4 Fast costs less

For input processing, DeepSeek-V3.2 (Thinking) ($0.28/1M tokens) is 1.4x more expensive than Grok 4 Fast ($0.20/1M tokens).

For output processing, DeepSeek-V3.2 (Thinking) ($0.42/1M tokens) is 1.2x cheaper than Grok 4 Fast ($0.50/1M tokens).

In conclusion, DeepSeek-V3.2 (Thinking) is more expensive than Grok 4 Fast.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Mon May 18 2026 • llm-stats.com
DeepSeek
DeepSeek-V3.2 (Thinking)
Input tokens$0.28
Output tokens$0.42
Best providerDeepSeek
xAI
Grok 4 Fast
Input tokens$0.20
Output tokens$0.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok 4 Fast accepts 2,000,000 input tokens compared to DeepSeek-V3.2 (Thinking)'s 131,072 tokens. DeepSeek-V3.2 (Thinking) can generate longer responses up to 65,536 tokens, while Grok 4 Fast is limited to 30,000 tokens.

DeepSeek
DeepSeek-V3.2 (Thinking)
Input131,072 tokens
Output65,536 tokens
xAI
Grok 4 Fast
Input2,000,000 tokens
Output30,000 tokens
Mon May 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok 4 Fast supports multimodal inputs, whereas DeepSeek-V3.2 (Thinking) does not.

Grok 4 Fast can handle both text and other forms of data like images, making it suitable for multimodal applications.

DeepSeek-V3.2 (Thinking)

Text
Images
Audio
Video

Grok 4 Fast

Text
Images
Audio
Video

License

Usage and distribution terms

DeepSeek-V3.2 (Thinking) is licensed under MIT, while Grok 4 Fast uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

DeepSeek-V3.2 (Thinking)

MIT

Open weights

Grok 4 Fast

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-V3.2 (Thinking) was released on 2025-12-01, while Grok 4 Fast was released on 2025-08-28.

DeepSeek-V3.2 (Thinking) is 3 months newer than Grok 4 Fast.

DeepSeek-V3.2 (Thinking)

Dec 1, 2025

5 months ago

3mo newer
Grok 4 Fast

Aug 28, 2025

8 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

DeepSeek-V3.2 (Thinking) is available from DeepSeek. Grok 4 Fast is available from xAI.

DeepSeek-V3.2 (Thinking)

deepseek logo
DeepSeek
Input Price:Input: $0.28/1MOutput Price:Output: $0.42/1M

Grok 4 Fast

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $0.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

DeepSeek
Less expensive output tokens
Has open weights
Higher AIME 2025 score (93.1% vs 92.0%)
Higher BrowseComp score (51.4% vs 44.9%)
Higher Humanity's Last Exam score (25.1% vs 20.0%)
Higher LiveCodeBench score (83.3% vs 80.0%)
xAI
Larger context window (2,000,000 tokens)
Supports multimodal inputs
Less expensive input tokens
Higher GPQA score (85.7% vs 82.4%)
Higher HMMT 2025 score (93.3% vs 90.2%)

Detailed Comparison

AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V3.2 (Thinking)
xAI
Grok 4 Fast

FAQ

Common questions about DeepSeek-V3.2 (Thinking) vs Grok 4 Fast.

Which is better, DeepSeek-V3.2 (Thinking) or Grok 4 Fast?

DeepSeek-V3.2 (Thinking) shows notably better performance in the majority of benchmarks. DeepSeek-V3.2 (Thinking) is made by DeepSeek and Grok 4 Fast is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does DeepSeek-V3.2 (Thinking) compare to Grok 4 Fast in benchmarks?

DeepSeek-V3.2 (Thinking) scores AIME 2025: 93.1%, HMMT 2025: 90.2%, MMLU-Pro: 85.0%, LiveCodeBench: 83.3%, GPQA: 82.4%. Grok 4 Fast scores SimpleQA: 95.0%, HMMT 2025: 93.3%, AIME 2025: 92.0%, GPQA: 85.7%, LiveCodeBench: 80.0%.

Is DeepSeek-V3.2 (Thinking) cheaper than Grok 4 Fast?

Grok 4 Fast is 1.4x cheaper for input tokens. DeepSeek-V3.2 (Thinking) costs $0.28/M input and $0.42/M output via deepseek. Grok 4 Fast costs $0.20/M input and $0.50/M output via xai.

What are the context window sizes for DeepSeek-V3.2 (Thinking) and Grok 4 Fast?

DeepSeek-V3.2 (Thinking) supports 131K tokens and Grok 4 Fast supports 2.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between DeepSeek-V3.2 (Thinking) and Grok 4 Fast?

Key differences include context window (131K vs 2.0M), input pricing ($0.28 vs $0.20/M), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V3.2 (Thinking) and Grok 4 Fast?

DeepSeek-V3.2 (Thinking) is developed by DeepSeek and Grok 4 Fast is developed by xAI.