+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT OSS 20B vs Phi 4 Reasoning
Comprehensive side-by-side LLM comparison
Phi 4 Reasoning leads with 27.1% higher average benchmark score. GPT OSS 20B is available on 4 providers. Overall, Phi 4 Reasoning is the stronger choice for coding tasks.
+
+
+
+
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.
+
+
+
+
Microsoft
Phi 4 Reasoning is a language model developed by Microsoft. It achieves strong performance with an average score of 75.1% across 11 benchmarks. It excels particularly in FlenQA (97.7%), HumanEval+ (92.9%), IFEval (83.4%). It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents Microsoft's latest advancement in AI technology.
3 months newer
Phi 4 Reasoning
Microsoft
2025-04-30
GPT OSS 20B
OpenAI
2025-08-05
Performance Metrics
Context window and performance specifications
Average performance across 17 common benchmarks
+
+
+
+
GPT OSS 20B
Average Score:21.5%
+
+
+
+
Phi 4 Reasoning
Average Score:48.6%(+27.1%)
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Phi 4 Reasoning
2025-03-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
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
+
+
+
+
+
+
GPT OSS 20B
Avg Score:21.5%
Providers:4
+
+
+
+
Phi 4 Reasoning
Avg Score:48.6%(+27.1%)
Providers:0