xAI's agentic build model for autonomous software engineering.
Ultra-fast and lightweight GPT-5 variant for low-latency tasks.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Grok Build 0.1 and GPT 5 Nano are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
GPT 5 Nano has a lower blended cost. Grok Build 0.1: $1.00 input / $2.00 output. GPT 5 Nano: $0.05 input / $0.40 output.
GPT 5 Nano has a larger context window: Grok Build 0.1 supports 256K tokens vs GPT 5 Nano at 400K tokens.
Yes, both Grok Build 0.1 and GPT 5 Nano support vision/image input.
Key differences: GPT 5 Nano is significantly cheaper. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Grok Build 0.1 and GPT 5 Nano for free on idapt.app to see which performs better for your specific needs.