fix model and backends

fix readme and run_benchmark.py

1. remove deepseek-reasoner temporaily due to the compability issue;

1. Update readme with new arixv paper.

update gitignore

update readme figure

Merge branch 'dev'

replace new figure

add data process and fig plot nodebook

Merge branch 'dev'

stable version for open source and paper submission

fixed some apis and adding data analysis

update some problems

add slow senders and receivers;

first trial with gpt-5-mini, added system logs