Nov 13 (Reuters) - Thinking Machines Lab, the artificial

intelligence startup founded by former OpenAI executive Mira

Murati, is in early talks to raise a new funding round at a

roughly $50 billion valuation, Bloomberg News reported on

Thursday.

The startup was last valued at $12 billion in July, after it

raised about $2 billion.

Some sources told Bloomberg that Thinking Machines is

looking at a valuation of about $50 billion, while others said

it could rise to closer to $55 billion or $60 billion.

The deal terms have not yet been finalized and could change,

the report added.

Thinking Machines did not immediately respond to a Reuters

request for comment.

The development follows a Wall Street Journal report last

month that said Andrew Tulloch, co-founder of Thinking Machines,

left the AI company to join Meta Platforms ( META ).

It launched its first product called Tinker, which helps

fine-tune language models in October.