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Claude Opus 4.1 vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
Claude Opus 4.1 leads with 16.6% higher average benchmark score. GPT OSS 20B offers 30.1K more tokens in context window than Claude Opus 4.1. GPT OSS 20B is $89.75 cheaper per million tokens. Claude Opus 4.1 supports multimodal inputs. Overall, Claude Opus 4.1 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.1 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 72.7% across 8 benchmarks. It excels particularly in MMMLU (89.5%), TAU-bench Retail (82.4%), GPQA (80.9%). It supports a 232K 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.
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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.
Launched on the same date
Claude Opus 4.1
Anthropic
2025-08-05
GPT OSS 20B
OpenAI
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.1
Input:$15.00
Output:$75.00
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GPT OSS 20B
Input:$0.05
Output:$0.20($89.75 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 13 common benchmarks
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Claude Opus 4.1
Average Score:44.7%(+16.6%)
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GPT OSS 20B
Average Score:28.2%
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.1
4 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Opus 4.1
Avg Score:44.7%(+16.6%)
Providers:4
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GPT OSS 20B
Avg Score:28.2%
Providers:4