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Claude Sonnet 4 vs Grok 2
Comprehensive side-by-side LLM comparison
Claude Sonnet 4 offers 124.7K more tokens in context window than Grok 2. Grok 2 is $6.00 cheaper per million tokens. Claude Sonnet 4 is available on 3 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Sonnet 4, released by Anthropic in May 2025, is a large language model from the Claude 4 family that delivers a balance of performance and efficiency for coding, reasoning, and analytical tasks. It features a 200K token context window (extendable to 1M tokens in beta), 64K maximum output tokens, native image understanding, and extended thinking support. Sonnet 4 targets development workflows, document analysis, and applications that benefit from the performance characteristics of the Claude 4 generation.
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xAI
Grok 2, released by xAI in August 2024, is a large language model with 131K token context window and native image understanding, developed with access to real-time information from the X platform. It features multimodal input capabilities and improved reasoning over its predecessor. Grok 2 targets conversational assistants, image analysis, and real-time information retrieval tasks via the xAI API.
9 months newer
Grok 2
xAI
2024-08-14
Claude Sonnet 4
Anthropic
2025-05-14
Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4
Input:$3.00
Output:$15.00
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Grok 2
Input:$2.00
Output:$10.00($6.00 cheaper)
Performance Metrics
Context window and performance specifications
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Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4
2025-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Sonnet 4
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Grok 2
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Claude Sonnet 4
Avg Score:0.0%
Providers:3
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Grok 2
Avg Score:0.0%
Providers:1