What's larger?

The anaconda is larger. Can be 30 feet long and weigh up to 350 pounds. Komodo Dragon is around 10 feet long and weighs around 150 pounds. Good question, I love questions about animals in the reptile family.

The Komodo dragon is the world's largest lizard species. It is found mainly on the Indonesian islands of Komodo, Rintja, Padar, and Flores. There are only an estimated 1,000 to 5,000 of these monitor lizards living today. Reaching lengths of up to 3 m or more, and weighing up to 126 kg, these reptiles are swift runners and climbers with great appetites for deer and wild boar.

Although often regarded as pests, they are not a serious menace to humans. In order to protect the dragon, the Indonesian government has made the islands of Padar and Rintja into nature reserves for both the lizard and its prey. Commercial trade in specimens or skins is illegal under the Convention on International Trade in Endangered Species.

Two species are well-known:

The Green Anaconda (Eunectes murinus, from the Greek "ευνήκτης, eunectes", meaning "good swimmer"), which has been reliably reported in the 9 metre range (30 feet) in length (although most are considerably smaller). Although shorter than the longest recorded species, the Reticulated Python, it is considerably heavier. In fact, it is the heaviest snake species in existence: it can weigh 250 kg (551 pounds) and have a diameter of more than 30 cm (11.8 inches), but zoologist Johnathan Wright notes that average weight is about 126-150kg (about 275-330lbs), though specimens in captivity are generally smaller. Females average 6.7-7.9m (22-26ft) in length, while males average 3-4m (12-16ft). These are found mainly in northern South America, in Venezuela, Colombia, Brazil, Ecuador, Bolivia, Peru, Guyana, and the Nariva Swamp in Trinidad[1] where they are known as "Huille" (pronounced Wheel)[2].

Green Anaconda, Eunectes murinus

A wild anaconda snake, Amazon basin, Peru.

An anaconda snake on a tree branch, waiting for its prey above the river, Amazon basin, Peru.

Anaconda at the Reptile Zoo east of Monroe, Washington.The Yellow Anaconda (Eunectes notaeus), which reaches a relatively smaller average adult length of 3 metres (9.8 feet). These live further south in Bolivia, Paraguay, Uruguay, western Brazil, and northeast Argentina.

The two lesser-known species are:

The Dark-Spotted or Deschauense's Anaconda (Eunectes deschauenseei) found in northeast Brazil.

The Bolivian Anaconda (Eunectes beniensis) found in Bolivia, which was only identified in 2002 by Lutz Dirksen, and is still being studied.

The anaconda is generally bigger in terms of length. The anaconda is the biggest snake but the komodo dragon is the biggest lizard.

It depends on what you mean by larger.

Longer? - anaconda

Taller? - komodo

Heavier? - anaconda

Wider? - komodo, usually