Instruction-following variant of GPT-3.5 for completion-style tasks.
xAI's smartest model, with frontier performance on coding, knowledge work, and STEM.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 3.5 Turbo Instruct and Grok 4.6 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 3.5 Turbo Instruct has a lower blended cost. GPT 3.5 Turbo Instruct: $1.50 input / $2.00 output. Grok 4.6: $2.00 input / $6.00 output.
Grok 4.6 has a larger context window: GPT 3.5 Turbo Instruct supports 4K tokens vs Grok 4.6 at 500K tokens.
Grok 4.6 supports vision/image input, but GPT 3.5 Turbo Instruct does not.
Key differences: only Grok 4.6 supports vision input; only Grok 4.6 offers extended reasoning mode. 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 GPT 3.5 Turbo Instruct and Grok 4.6 for free on idapt.app to see which performs better for your specific needs.