Anthropic's Claude 3.7 achieves what GPT-5 promised. Remember when Sam Altman talked about GPT-5 unifying their models and having variable thinking times?

a top goal for us is to unify o-series models and GPT-series models by creating systems that can [...] know when to think for a long time or not [..] we will release GPT-5 as a system that integrates a lot of our technology, including o3

and

The free tier of ChatGPT will get unlimited chat access to GPT-5 at the standard intelligence setting. Plus subscribers will be able to run GPT-5 at a higher level of intelligence

Here, "level of intelligence" just refers to the amount of test-time compute.

Anthropic just made it a reality first.

• Claude 3.7 can function as both a standard LLM and a powerful reasoning engine. Users can choose between quick responses or extended, step-by-step thinking on demand.
• When using the API, you can actually control how much "thinking" Claude does. Set a token limit (up to 128K) to balance speed, cost, and answer quality.

This release could be a major inflection point. We're seeing the first truly flexible AI that can adapt its reasoning depth on the fly. What are your thoughts on the implications? Will this push other AI labs to accelerate their own hybrid model development?