GLM 4.5 (by z.ai Chinese company that publishes VIDU, chatbot: https://chat.z.ai and documentation <a href="https://github.com/zai-org/GLM-4.5″>https://github.com/zai-org/GLM-4.5) is a language model open-source available in two versions: 4.5 (355 B of parameters) and 4.5 Air (105 B of parameters), both with reasoning, code generation and web search capabilities.

Document processing (up to 5 of 50 MB each).
Canvas function and an agent dedicated to generating presentations.
Sharing conversations by URL.

Free and seems unlimited.

Training test: https://chat.z.ai/s/410a2ba1-dab9-4a91-a928-cfb709715c9b

Item Search Test: https://chat.z.ai/s/a35644d9-e742-4846-be60-12d7c1bc5bf3

Test generation of the application “The multiplication farm”: https://chat.z.ai/space/q08d66j35r10-art

Presentation test: https://chat.z.ai/space/u01df6jv17y1-ppt

Test analysis “Framework for the use of AI in education”: https://chat.z.ai/s/d7e66aef-9a2d-41dc-bd18-219bf8c465ff