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Claude 3 Sonnet vs Grok-1.5V

Claude 3 Sonnet and Grok-1.5V are closely matched at 1.7 and -0.8 on the LLM Stats Score.

Anthropic · xAI · Updated for 2026

Which is better?

Claude 3 Sonnet and Grok-1.5V are closely matched on the overall LLM Stats Score at 1.7 and -0.8.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude 3 Sonnet

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

Choose Grok-1.5V

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

At a glance

The differences that matter most.

Claude 3 Sonnet
Anthropic
Grok-1.5V
xAI
Core performance indexes
LLM Stats Score
1.7
#335
-0.8
#348
Reasoning
1.7
#326
-0.1
#335
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
200,000
—

Individual benchmarks

11 reported for Claude 3 Sonnet · 7 for Grok-1.5V

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.

Human preference

Blind head-to-head votes and playground preference scores

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
Sun Oct 11 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

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

2.6 years ago

Grok-1.5V

Apr 12, 2024

2.5 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?

Judge for yourself.

Run your own prompts against Claude 3 Sonnet and Grok-1.5V side-by-side, then vote on the output you prefer.

Claude 3 Sonnet
✓ Preferred
Grok-1.5V
Open in Playground

FAQ

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

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

Claude 3 Sonnet and Grok-1.5V are closely matched on the LLM Stats Score at 1.7 and -0.8. Claude 3 Sonnet is made by Anthropic and Grok-1.5V is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

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.

What are the main differences between Claude 3 Sonnet and Grok-1.5V?

Key differences include LLM Stats Score (1.7 vs -0.8). See the full comparison above for benchmark-by-benchmark results.

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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