Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
xAI
Grok Code Fast was developed as a specialized coding model optimized for speed, designed to provide rapid code completion, generation, and assistance. Built to serve developers requiring quick feedback and iterative coding support, it combines programming expertise with low-latency responses.
Microsoft
Phi-4 Reasoning was developed to incorporate extended analytical thinking into the Phi-4 architecture, designed to spend more time on complex problem-solving. Built to combine compact model efficiency with reasoning depth, it represents Microsoft's exploration of thoughtful small models.
4 months newer

Phi 4 Reasoning
Microsoft
2025-04-30

Grok Code Fast 1
xAI
2025-08-28
Context window and performance specifications
Phi 4 Reasoning
2025-03-01
Available providers and their performance metrics

Grok Code Fast 1
xAI

Phi 4 Reasoning

Grok Code Fast 1

Phi 4 Reasoning

Grok Code Fast 1

Phi 4 Reasoning