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Claude Sonnet 4 vs GPT-5.2
Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 9.6% higher average benchmark score. Claude Sonnet 4 is available on 3 providers. Overall, GPT-5.2 is the stronger choice for coding tasks.
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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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OpenAI
GPT-5.2, released by OpenAI on December 11, 2025, is a large language model from the GPT-5 family that improves on GPT-5 in general intelligence, long-context understanding, agentic tool-calling, and vision. It features a 400K token context window, 128K maximum output tokens, and a knowledge cutoff of August 2025. GPT-5.2 targets long-context coding tasks, extended document analysis, and complex agentic workflows requiring reliable instruction following.
7 months newer
Claude Sonnet 4
Anthropic
2025-05-14
GPT-5.2
OpenAI
2025-12-11
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude Sonnet 4
Average Score:39.8%
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GPT-5.2
Average Score:49.4%(+9.6%)
Performance comparison across key benchmark categories
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Claude Sonnet 4
Tool Use35.6%
Agents43.9%(+5.7%)
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GPT-5.2
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Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4
2025-01
GPT-5.2
2025-08
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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GPT-5.2
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Claude Sonnet 4
Avg Score:39.8%
Providers:3
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GPT-5.2
Avg Score:49.4%(+9.6%)
Providers:0