Anthropic's new flagship for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
OpenAI's original fast chat model optimized for efficiency.
No shared demos for these models yet.
No captured outputs for these models yet.
Both Claude Opus 5.5 and GPT 3.5 Turbo 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 has a lower blended cost. Claude Opus 5.5: $4.00 input / $20.00 output. GPT 3.5 Turbo: $0.50 input / $1.50 output.
Claude Opus 5.5 has a larger context window: Claude Opus 5.5 supports 1M tokens vs GPT 3.5 Turbo at 16K tokens.
Claude Opus 5.5 supports vision/image input, but GPT 3.5 Turbo does not.
Key differences: GPT 3.5 Turbo is significantly cheaper; only Claude Opus 5.5 supports vision input; only Claude Opus 5.5 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 Claude Opus 5.5 and GPT 3.5 Turbo for free on idapt.app to see which performs better for your specific needs.