Model Comparison

Claude 3 Sonnet vs Grok Code Fast 1

Comparing Claude 3 Sonnet and Grok Code Fast 1 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude 3 Sonnet and Grok Code Fast 1 don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok Code Fast 1 costs less

For input processing, Claude 3 Sonnet ($3.00/1M tokens) is 15.0x more expensive than Grok Code Fast 1 ($0.20/1M tokens).

For output processing, Claude 3 Sonnet ($15.00/1M tokens) is 10.0x more expensive than Grok Code Fast 1 ($1.50/1M tokens).

In conclusion, Claude 3 Sonnet is more expensive than Grok Code Fast 1.*

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

Lowest available price from all providers
Sat May 02 2026 • llm-stats.com
Anthropic
Claude 3 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
xAI
Grok Code Fast 1
Input tokens$0.20
Output tokens$1.50
Best providerxAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Grok Code Fast 1 accepts 256,000 input tokens compared to Claude 3 Sonnet's 200,000 tokens. Claude 3 Sonnet can generate longer responses up to 200,000 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.

Anthropic
Claude 3 Sonnet
Input200,000 tokens
Output200,000 tokens
xAI
Grok Code Fast 1
Input256,000 tokens
Output10,000 tokens
Sat May 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3 Sonnet supports multimodal inputs, whereas Grok Code Fast 1 does not.

Claude 3 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3 Sonnet

Text
Images
Audio
Video

Grok Code Fast 1

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 Code Fast 1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Sonnet was released on 2024-02-29, while Grok Code Fast 1 was released on 2025-08-28.

Grok Code Fast 1 is 18 months newer than Claude 3 Sonnet.

Claude 3 Sonnet

Feb 29, 2024

2.2 years ago

Grok Code Fast 1

Aug 28, 2025

8 months ago

1.5yr 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

Provider Availability

Claude 3 Sonnet is available from Anthropic, Bedrock, Google. Grok Code Fast 1 is available from xAI.

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

Grok Code Fast 1

xai logo
xAI
Input Price:Input: $0.20/1MOutput Price:Output: $1.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Supports multimodal inputs
xAI
Larger context window (256,000 tokens)
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Sonnet
xAI
Grok Code Fast 1

FAQ

Common questions about Claude 3 Sonnet vs Grok Code Fast 1

Claude 3 Sonnet (Anthropic) and Grok Code Fast 1 (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.
Claude 3 Sonnet scores ARC-C: 93.2%, GSM8k: 92.3%, HellaSwag: 89.0%, MGSM: 83.5%, BIG-Bench Hard: 82.9%. Grok Code Fast 1 scores SWE-Bench Verified: 70.8%.
Grok Code Fast 1 is 15.0x cheaper for input tokens. Claude 3 Sonnet costs $3.00/M input and $15.00/M output via anthropic. Grok Code Fast 1 costs $0.20/M input and $1.50/M output via xai.
Claude 3 Sonnet supports 200K tokens and Grok Code Fast 1 supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (200K vs 256K), input pricing ($3.00 vs $0.20/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.
Claude 3 Sonnet is developed by Anthropic and Grok Code Fast 1 is developed by xAI.