+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Sonnet 4 vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 14.6% higher average benchmark score. Claude Sonnet 4 offers 65.9K more tokens in context window than GPT OSS 20B. GPT OSS 20B is $17.75 cheaper per million tokens. Claude Sonnet 4 supports multimodal inputs. Overall, Claude Sonnet 4 is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude Sonnet 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 69.4% across 8 benchmarks. It excels particularly in MMMLU (86.5%), TAU-bench Retail (80.5%), GPQA (75.4%). It supports a 328K token context window for handling large documents. The model is available through 4 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.
+
+
+
+
OpenAI
GPT OSS 20B is a language model developed by OpenAI. The model shows competitive results across 7 benchmarks. It excels particularly in MMLU (85.3%), CodeForces (83.9%), GPQA (71.5%). It supports a 262K token context window for handling large documents. The model is available through 4 API providers. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents OpenAI's latest advancement in AI technology.
2 months newer
Claude Sonnet 4
Anthropic
2025-05-22
GPT OSS 20B
OpenAI
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude Sonnet 4
Input:$3.00
Output:$15.00
+
+
+
+
GPT OSS 20B
Input:$0.05
Output:$0.20($17.75 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 13 common benchmarks
+
+
+
+
Claude Sonnet 4
Average Score:42.7%(+14.6%)
+
+
+
+
GPT OSS 20B
Average Score:28.2%
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Claude Sonnet 4
4 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
Bedrock
Throughput: 101 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
+
+
+
+
Claude Sonnet 4
Avg Score:42.7%(+14.6%)
Providers:4
+
+
+
+
GPT OSS 20B
Avg Score:28.2%
Providers:4