Model Comparison

Grok-3 vs Claude 3 Sonnet

Grok-3 significantly outperforms across most benchmarks. Grok-3 and Claude 3 Sonnet cost the same.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Grok-3 outperforms in 1 benchmarks (GPQA), while Claude 3 Sonnet is better at 0 benchmarks.

Grok-3 significantly outperforms across most benchmarks.

Sat Apr 04 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3 Sonnet costs less

For input processing, Grok-3 ($3.00/1M tokens) costs the same as Claude 3 Sonnet ($3.00/1M tokens).

For output processing, Grok-3 ($15.00/1M tokens) costs the same as Claude 3 Sonnet ($15.00/1M tokens).

In conclusion, Grok-3 and Claude 3 Sonnet cost the same.*

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

Lowest available price from all providers
Sat Apr 04 2026 • llm-stats.com
xAI
Grok-3
Input tokens$3.00
Output tokens$15.00
Best providerxAI
Anthropic
Claude 3 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude 3 Sonnet accepts 200,000 input tokens compared to Grok-3's 128,000 tokens. Claude 3 Sonnet can generate longer responses up to 200,000 tokens, while Grok-3 is limited to 8,000 tokens.

xAI
Grok-3
Input128,000 tokens
Output8,000 tokens
Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
Sat Apr 04 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

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

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

Grok-3

Text
Images
Audio
Video

Claude 3 Sonnet

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.

Grok-3

Proprietary

Closed source

Claude 3 Sonnet

Proprietary

Closed source

Release Timeline

When each model was launched

Grok-3 was released on 2025-02-17, while Claude 3 Sonnet was released on 2024-02-29.

Grok-3 is 12 months newer than Claude 3 Sonnet.

Grok-3

Feb 17, 2025

1.1 years ago

11mo newer
Claude 3 Sonnet

Feb 29, 2024

2.1 years ago

Knowledge Cutoff

When training data ends

Grok-3 has a documented knowledge cutoff of 2024-11-17, while Claude 3 Sonnet's cutoff date is not specified.

We can confirm Grok-3's training data extends to 2024-11-17, but cannot make a direct comparison without Claude 3 Sonnet's cutoff date.

Grok-3

Nov 2024

Claude 3 Sonnet

—

Provider Availability

Grok-3 is available from xAI. Claude 3 Sonnet is available from Anthropic, Bedrock, Google.

Grok-3

xai logo
xAI
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Claude 3 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
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Higher GPQA score (84.6% vs 40.4%)
Anthropic
Larger context window (200,000 tokens)
xAIGrok-3
AnthropicClaude 3 Sonnet
Compare in Playground

Detailed Comparison

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

FAQ

Common questions about Grok-3 vs Claude 3 Sonnet

Grok-3 significantly outperforms across most benchmarks. Grok-3 is made by xAI and Claude 3 Sonnet is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Grok-3 scores AIME 2024: 93.3%, AIME 2025: 93.3%, GPQA: 84.6%, LiveCodeBench: 79.4%, MMMU: 78.0%. Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%.
Both models cost $3.00 per million input tokens.
Grok-3 supports 128K tokens and Claude 3 Sonnet supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (128K vs 200K). See the full comparison above for benchmark-by-benchmark results.
Grok-3 is developed by xAI and Claude 3 Sonnet is developed by Anthropic.