Comprehensive side-by-side LLM comparison
GPT-5 Mini offers 154.2K more tokens in context window than Grok 4. GPT-5 Mini is $5.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-5 mini, released by OpenAI in August 2025, is a smaller variant from the GPT-5 family that inherits GPT-5's unified reasoning architecture and multimodal capabilities at a reduced inference cost. It targets high-volume production use cases requiring a balance of intelligence and response speed, offering GPT-5 capabilities for applications where full GPT-5 inference costs are a concern.
xAI
Grok 4, released by xAI on July 10, 2025, is a large language model featuring first-principles reasoning and comprehensive multimodal support. It features a 260K token context window and demonstrated strong performance on advanced reasoning and coding benchmarks. Grok 4 targets complex multi-step reasoning tasks, scientific analysis, and agentic workflows via the xAI API.
22 days newer

Grok 4
xAI
2025-07-10

GPT-5 Mini
OpenAI
2025-08
Cost per million tokens (USD)
GPT-5 Mini
Grok 4
Context window and performance specifications
Available providers and their performance metrics
GPT-5 Mini
OpenAI
Grok 4
GPT-5 Mini
Grok 4
GPT-5 Mini
Grok 4
xAI