OpenAI's new flagship for demanding end-to-end work: advanced analysis, software engineering, deep research, scientific work, and document creation.
Kimi K2 with always-on extended reasoning for complex problem solving.
No shared demos for these models yet.
No captured outputs for these models yet.
Both GPT 6 Astra and Kimi K2 Thinking 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.
Kimi K2 Thinking has a lower blended cost. GPT 6 Astra: $10.00 input / $50.00 output. Kimi K2 Thinking: $0.60 input / $2.50 output.
GPT 6 Astra has a larger context window: GPT 6 Astra supports 1.1M tokens vs Kimi K2 Thinking at 262K tokens.
GPT 6 Astra supports vision/image input, but Kimi K2 Thinking does not.
Key differences: Kimi K2 Thinking is significantly cheaper; only GPT 6 Astra supports vision input. 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 6 Astra and Kimi K2 Thinking for free on idapt.app to see which performs better for your specific needs.