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GPT OSS 20B vs Grok-3 Mini
Comprehensive side-by-side LLM comparison
Grok-3 Mini leads with 12.5% higher average benchmark score. GPT OSS 20B offers 126.1K more tokens in context window than Grok-3 Mini. GPT OSS 20B is $0.55 cheaper per million tokens. Grok-3 Mini supports multimodal inputs. GPT OSS 20B is available on 4 providers. Overall, Grok-3 Mini is the stronger choice for coding tasks.
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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.
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xAI
Grok 3 Mini was developed as an efficient version of Grok 3, designed to bring next-generation capabilities to resource-conscious deployments. Built to provide strong performance with practical efficiency, it extends Grok 3's innovations to broader application scenarios.
5 months newer
Grok-3 Mini
xAI
2025-02-17
GPT OSS 20B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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GPT OSS 20B
Input:$0.05
Output:$0.20($0.55 cheaper)
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Grok-3 Mini
Input:$0.30
Output:$0.50
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT OSS 20B
Average Score:71.5%
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Grok-3 Mini
Average Score:84.0%(+12.5%)
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Knowledge Cutoff
Training data recency comparison
Grok-3 Mini
2024-11-17
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT OSS 20B
4 providers
Groq
Throughput: 1000 tok/s
Latency: 0.38ms
Novita
OpenAI
Throughput: 115 tok/s
Latency: 5.2ms
ZeroEval
Throughput: 1000 tok/s
Latency: 0.38ms
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GPT OSS 20B
Avg Score:71.5%
Providers:4
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Grok-3 Mini
Avg Score:84.0%(+12.5%)
Providers:1