The abab 6.5 series includes two models: abab 6.5 and abab 6.5s, both supporting a context length of 200k tokens. abab 6.5 contains a trillion parameters, while abab 6.5s is more efficient, able to process nearly 30,000 characters of text in 1 second. They excel in core capability tests such as knowledge, reasoning, mathematics, programming, and instruction following, reaching near industry-leading levels.