Claude 3.7 Sonnet vs Grok-3 Comparison

Comparing Claude 3.7 Sonnet and Grok-3 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Claude 3.7 Sonnet outperforms in 1 benchmarks (GPQA), while Grok-3 is better at 3 benchmarks (AIME 2024, AIME 2025, MMMU).

Grok-3 shows notably better performance in the majority of benchmarks.

Wed Mar 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-3 costs less

For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) costs the same as Grok-3 ($3.00/1M tokens).

For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) costs the same as Grok-3 ($15.00/1M tokens).

In conclusion, Claude 3.7 Sonnet and Grok-3 cost the same.*

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

Lowest available price from all providers

Wed Mar 18 2026 • llm-stats.com

Claude 3.7 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

Grok-3

Input tokens$3.00

Output tokens$15.00

Best providerxAI

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Context Window

Maximum input and output token capacity

Claude 3.7 Sonnet accepts 200,000 input tokens compared to Grok-3's 128,000 tokens. Claude 3.7 Sonnet can generate longer responses up to 128,000 tokens, while Grok-3 is limited to 8,000 tokens.

Claude 3.7 Sonnet

Input200,000 tokens

Output128,000 tokens

Grok-3

Input128,000 tokens

Output8,000 tokens

Wed Mar 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and Grok-3 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-3

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-3

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Grok-3 was released on 2025-02-17.

Claude 3.7 Sonnet is 0 month newer than Grok-3.

Claude 3.7 Sonnet

Feb 24, 2025

1.1 years ago

1w newer

Grok-3

Feb 17, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

Grok-3 has a documented knowledge cutoff of 2024-11-17, while Claude 3.7 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 3.7 Sonnet's cutoff date.

Claude 3.7 Sonnet

—

Grok-3

Nov 2024

Provider Availability

Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. Grok-3 is available from xAI. The availability of providers can affect quality of the model and reliability.