Model Comparison

Claude 3 Sonnet vs Grok-1.5VWhich is better in 2026?

Comparing Claude 3 Sonnet and Grok-1.5V across benchmarks, pricing, and capabilities.

Verdict: Claude 3 Sonnet vs Grok-1.5V — which is better?

Claude 3 Sonnet (by Anthropic) and Grok-1.5V (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.

Choose Claude 3 Sonnet if…

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

Choose Grok-1.5V if…

  • you want the most recent training data — it shipped Apr 2024
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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude 3 Sonnet and Grok-1.5Vdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude 3 Sonnet specifies input context (200,000 tokens). Only Claude 3 Sonnet specifies output context (200,000 tokens).

Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Sonnet and Grok-1.5V support multimodal inputs.

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

Claude 3 Sonnet

Text
Images
Audio
Video

Grok-1.5V

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 Sonnet

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Sonnet was released on 2024-02-29, while Grok-1.5V was released on 2024-04-12.

Grok-1.5V is 1 month newer than Claude 3 Sonnet.

Claude 3 Sonnet

Feb 29, 2024

2.3 years ago

Grok-1.5V

Apr 12, 2024

2.2 years ago

1mo newer

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

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
xAI

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

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Sonnet
xAI
Grok-1.5V

FAQ

Common questions about Claude 3 Sonnet vs Grok-1.5V.

Which is better, Claude 3 Sonnet or Grok-1.5V?

Claude 3 Sonnet (Anthropic) and Grok-1.5V (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude 3 Sonnet compare to Grok-1.5V in benchmarks?

Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%. Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%.

What are the context window sizes for Claude 3 Sonnet and Grok-1.5V?

Claude 3 Sonnet supports 200K tokens and Grok-1.5V supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Claude 3 Sonnet and Grok-1.5V?

Claude 3 Sonnet is developed by Anthropic and Grok-1.5V is developed by xAI.

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