+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT OSS 20B vs Grok-4
Comprehensive side-by-side LLM comparison
Grok-4 leads with 6.3% higher average benchmark score. Grok-4 offers 1.9K more tokens in context window than GPT OSS 20B. GPT OSS 20B is $17.75 cheaper per million tokens. Grok-4 supports multimodal inputs. GPT OSS 20B is available on 4 providers. Overall, Grok-4 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.
+
+
+
+
xAI
Grok-4 is a multimodal language model developed by xAI. It achieves strong performance with an average score of 63.1% across 7 benchmarks. It excels particularly in AIME 2025 (91.7%), HMMT25 (90.0%), GPQA (87.5%). It supports a 264K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.
27 days newer
Grok-4
xAI
2025-07-09
GPT OSS 20B
OpenAI
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
GPT OSS 20B
Input:$0.05
Output:$0.20($17.75 cheaper)
+
+
+
+
Grok-4
Input:$3.00
Output:$15.00
Performance Metrics
Context window and performance specifications
Average performance across 12 common benchmarks
+
+
+
+
GPT OSS 20B
Average Score:30.5%
+
+
+
+
Grok-4
Average Score:36.8%(+6.3%)
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Grok-4
2024-12-31
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:30.5%
Providers:4
+
+
+
+
Grok-4
Avg Score:36.8%(+6.3%)
Providers:2