+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude 3 Opus vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 9.8% higher average benchmark score. Claude 3 Opus offers 137.9K more tokens in context window than GPT OSS 20B. GPT OSS 20B is $89.75 cheaper per million tokens. Claude 3 Opus supports multimodal inputs. Overall, GPT OSS 20B is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude 3 Opus was developed as the most capable model in the Claude 3 family, designed to set new industry benchmarks across a wide range of cognitive tasks. Built to handle complex analysis and extended tasks requiring deep reasoning, it balanced frontier intelligence with careful safety considerations, representing the flagship tier of the Claude 3 generation.
+
+
+
+
OpenAI
GPT-OSS 20B was created as a smaller open-source variant, designed to balance capability with accessibility for researchers and developers. Built with 20 billion parameters, it provides a more approachable entry point for those seeking to work with open-source language models while benefiting from OpenAI's architectural insights.
1 year newer
Claude 3 Opus
Anthropic
2024-02-29
GPT OSS 20B
OpenAI
2025-08-05
+
+
+
+
+
+
+
+
+
+
+
+
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude 3 Opus
Input:$15.00
Output:$75.00
+
+
+
+
GPT OSS 20B
Input:$0.05
Output:$0.20($89.75 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
+
+
+
+
Claude 3 Opus
Average Score:68.6%
+
+
+
+
GPT OSS 20B
Average Score:78.4%(+9.8%)
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Claude 3 Opus
3 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
+
+
+
+
+
+
+
Claude 3 Opus
Avg Score:68.6%
Providers:3
+
+
+
+
GPT OSS 20B
Avg Score:78.4%(+9.8%)
Providers:4