Model Comparison

DeepSeek-V3.1 vs Grok-4Which is better in 2026?

Grok-4 significantly outperforms across most benchmarks. DeepSeek-V3.1 is 13.3x cheaper per token.

Verdict: DeepSeek-V3.1 vs Grok-4 — which is better?

DeepSeek-V3.1 (by DeepSeek) and Grok-4 (by xAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

DeepSeek-V3.1 outperforms in 0 benchmarks, while Grok-4 is better at 4 benchmarks (AIME 2025, GPQA, Humanity's Last Exam, LiveCodeBench). Grok-4 significantly outperforms across most benchmarks.

On price, DeepSeek-V3.1 is roughly 13.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Grok-4 also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose DeepSeek-V3.1 if…

  • cost matters — it's about 13.3x cheaper per token
  • you need open weights you can self-host or fine-tune

Choose Grok-4 if…

  • you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
  • you process long inputs — it offers a 256,000 token context window
  • you want the most recent training data — it shipped Jul 2025
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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

DeepSeek-V3.1 outperforms in 0 benchmarks, while Grok-4 is better at 4 benchmarks (AIME 2025, GPQA, Humanity's Last Exam, LiveCodeBench).

Grok-4 significantly outperforms across most benchmarks.

Mon Jun 08 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V3.1 costs less

For input processing, DeepSeek-V3.1 ($0.27/1M tokens) is 11.1x cheaper than Grok-4 ($3.00/1M tokens).

For output processing, DeepSeek-V3.1 ($1.00/1M tokens) is 15.0x cheaper than Grok-4 ($15.00/1M tokens).

In conclusion, Grok-4 is more expensive than DeepSeek-V3.1.*

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

Lowest available price from all providers
Mon Jun 08 2026 • llm-stats.com
DeepSeek
DeepSeek-V3.1
Input tokens$0.27
Output tokens$1.00
Best providerDeepinfra
xAI
Grok-4
Input tokens$3.00
Output tokens$15.00
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok-4 accepts 256,000 input tokens compared to DeepSeek-V3.1's 163,840 tokens. DeepSeek-V3.1 can generate longer responses up to 163,840 tokens, while Grok-4 is limited to 8,000 tokens.

DeepSeek
DeepSeek-V3.1
Input163,840 tokens
Output163,840 tokens
xAI
Grok-4
Input256,000 tokens
Output8,000 tokens
Mon Jun 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok-4 supports multimodal inputs, whereas DeepSeek-V3.1 does not.

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

DeepSeek-V3.1

Text
Images
Audio
Video

Grok-4

Text
Images
Audio
Video

License

Usage and distribution terms

DeepSeek-V3.1 is licensed under MIT, while Grok-4 uses a proprietary license.

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

DeepSeek-V3.1

MIT

Open weights

Grok-4

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-V3.1 was released on 2025-01-10, while Grok-4 was released on 2025-07-09.

Grok-4 is 6 months newer than DeepSeek-V3.1.

DeepSeek-V3.1

Jan 10, 2025

1.4 years ago

Grok-4

Jul 9, 2025

11 months ago

6mo newer

Knowledge Cutoff

When training data ends

Grok-4 has a documented knowledge cutoff of 2024-12-31, while DeepSeek-V3.1's cutoff date is not specified.

We can confirm Grok-4's training data extends to 2024-12-31, but cannot make a direct comparison without DeepSeek-V3.1's cutoff date.

DeepSeek-V3.1

—

Grok-4

Dec 2024

Provider Availability

DeepSeek-V3.1 is available from DeepInfra, Novita. Grok-4 is available from xAI.

DeepSeek-V3.1

deepinfra logo
Deepinfra
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M
novita logo
Novita
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M

Grok-4

xai logo
xAI
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights
xAI
Larger context window (256,000 tokens)
Supports multimodal inputs
Higher AIME 2025 score (91.7% vs 49.8%)
Higher GPQA score (87.5% vs 74.9%)
Higher Humanity's Last Exam score (40.0% vs 15.9%)
Higher LiveCodeBench score (79.0% vs 56.4%)
DeepSeekDeepSeek-V3.1
xAIGrok-4
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Detailed Comparison

AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V3.1
xAI
Grok-4

FAQ

Common questions about DeepSeek-V3.1 vs Grok-4.

Which is better, DeepSeek-V3.1 or Grok-4?

Grok-4 significantly outperforms across most benchmarks. DeepSeek-V3.1 is made by DeepSeek and Grok-4 is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does DeepSeek-V3.1 compare to Grok-4 in benchmarks?

DeepSeek-V3.1 scores SimpleQA: 93.4%, MMLU-Redux: 91.8%, MMLU-Pro: 83.7%, GPQA: 74.9%, CodeForces: 69.7%. Grok-4 scores AIME 2025: 91.7%, HMMT25: 90.0%, GPQA: 87.5%, LiveCodeBench: 79.0%, Humanity's Last Exam: 40.0%.

Is DeepSeek-V3.1 cheaper than Grok-4?

DeepSeek-V3.1 is 11.1x cheaper for input tokens. DeepSeek-V3.1 costs $0.27/M input and $1.00/M output via deepinfra. Grok-4 costs $3.00/M input and $15.00/M output via xai.

What are the context window sizes for DeepSeek-V3.1 and Grok-4?

DeepSeek-V3.1 supports 164K tokens and Grok-4 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between DeepSeek-V3.1 and Grok-4?

Key differences include context window (164K vs 256K), input pricing ($0.27 vs $3.00/M), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V3.1 and Grok-4?

DeepSeek-V3.1 is developed by DeepSeek and Grok-4 is developed by xAI.

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