Are 20240620 and 20241022 the same model?
No. They are different dated versions of Claude 3.5 Sonnet, and you should use each one's full ID when making calls. Keep the original version configuration when maintaining older applications; when preparing to switch, compare answers and formatting using the same materials, and do not treat the two dates as interchangeable aliases.
How do I submit images for it to analyze?
Combine a text question with clear images in the text-and-image content blocks supported by the selected endpoint, and specify the areas of interest and expected output. Chat Completions uses text and image_url, while Messages uses its native image content blocks; do not use PDF or video URLs as image_url.
How should I choose between the two endpoints?
Applications that already use the OpenAI messages structure can use Chat Completions; if you need Claude-native content blocks, thinking, or tool_use/tool_result workflows, check Messages API support for this model. Handle the two request, response, and parameter formats separately, and retain the full model ID.
Can it directly use the thinking capability of the latest Sonnet?
Do not infer this from the model family name. This dated version and later Sonnet models must be assessed separately, and reasoning_effort in generic requests does not mean it has the corresponding thinking level. If a task depends on specific reasoning controls, choose a specific model that explicitly supports that capability.
Is it suitable for long-term use in new projects now?
It is better suited for maintaining existing version configurations and comparison testing. This model has been retired from Anthropic-operated platforms, and the official recommended replacement is Claude Sonnet 4.6. This platform's two calling endpoints still list this ID, but that does not mean it will remain available permanently. New projects should also evaluate newer candidate models and decide on a migration plan based on real text-and-image tasks and business acceptance results.