Model Comparison

Claude 3.7 Sonnet vs Grok-4Which is better in 2026?

Grok-4 significantly outperforms across most benchmarks. Claude 3.7 Sonnet and Grok-4 cost the same.

Verdict: Claude 3.7 Sonnet vs Grok-4 — which is better?

Claude 3.7 Sonnet (by Anthropic) 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.

Claude 3.7 Sonnet outperforms in 0 benchmarks, while Grok-4 is better at 2 benchmarks (AIME 2025, GPQA). Grok-4 significantly outperforms across most benchmarks.

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

Choose Claude 3.7 Sonnet if…

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Grok-4 if…

  • you want the strongest raw capability — it leads on 2 of 2 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

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Claude 3.7 Sonnet outperforms in 0 benchmarks, while Grok-4 is better at 2 benchmarks (AIME 2025, GPQA).

Grok-4 significantly outperforms across most benchmarks.

Sat Jun 27 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) costs the same as Grok-4 ($3.00/1M tokens).

For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) costs the same as Grok-4 ($15.00/1M tokens).

In conclusion, Claude 3.7 Sonnet and Grok-4 cost the same.*

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

Lowest available price from all providers
Sat Jun 27 2026 • llm-stats.com
Anthropic
Claude 3.7 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
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 Claude 3.7 Sonnet's 200,000 tokens. Claude 3.7 Sonnet can generate longer responses up to 128,000 tokens, while Grok-4 is limited to 8,000 tokens.

Anthropic
Claude 3.7 Sonnet
Input200,000 tokens
Output128,000 tokens
xAI
Grok-4
Input256,000 tokens
Output8,000 tokens
Sat Jun 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and Grok-4 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.7 Sonnet

Text
Images
Audio
Video

Grok-4

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3.7 Sonnet

Proprietary

Closed source

Grok-4

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Grok-4 was released on 2025-07-09.

Grok-4 is 5 months newer than Claude 3.7 Sonnet.

Claude 3.7 Sonnet

Feb 24, 2025

1.3 years ago

Grok-4

Jul 9, 2025

11 months ago

4mo newer

Knowledge Cutoff

When training data ends

Grok-4 has a documented knowledge cutoff of 2024-12-31, while Claude 3.7 Sonnet'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 Claude 3.7 Sonnet's cutoff date.

Claude 3.7 Sonnet

—

Grok-4

Dec 2024

Provider Availability

Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. Grok-4 is available from xAI.

Claude 3.7 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Grok-4

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

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic

No standout differentiators in the data we have for this pair.

xAI
Larger context window (256,000 tokens)
Higher AIME 2025 score (91.7% vs 54.8%)
Higher GPQA score (87.5% vs 84.8%)
AnthropicClaude 3.7 Sonnet
xAIGrok-4
Compare in Playground

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude 3.7 Sonnet and Grok-4 side-by-side, then vote on the output you prefer.

Claude 3.7 Sonnet
✓ Preferred
Grok-4
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude 3.7 Sonnet
xAI
Grok-4

FAQ

Common questions about Claude 3.7 Sonnet vs Grok-4.

Which is better, Claude 3.7 Sonnet or Grok-4?

Grok-4 significantly outperforms across most benchmarks. Claude 3.7 Sonnet is made by Anthropic 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 Claude 3.7 Sonnet compare to Grok-4 in benchmarks?

Claude 3.7 Sonnet scores MATH-500: 96.2%, IFEval: 93.2%, MMMLU: 86.1%, GPQA: 84.8%, TAU-bench Retail: 81.2%. Grok-4 scores AIME 2025: 91.7%, HMMT25: 90.0%, GPQA: 87.5%, LiveCodeBench: 79.0%, Humanity's Last Exam: 40.0%.

Is Claude 3.7 Sonnet cheaper than Grok-4?

Both models cost $3.00 per million input tokens.

What are the context window sizes for Claude 3.7 Sonnet and Grok-4?

Claude 3.7 Sonnet supports 200K 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 Claude 3.7 Sonnet and Grok-4?

Key differences include context window (200K vs 256K). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.7 Sonnet and Grok-4?

Claude 3.7 Sonnet is developed by Anthropic and Grok-4 is developed by xAI.

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