Does Anton Chigurh kill Carla Jean Moss?

Not 100% definitive, but I always thought that he did. Evidence that he kills her:

1. Its explicitly stated that he does in the book
2. The shot of him inspecting his boots on the way out implies that he is checking for blood

The cattle gun Chigurh used was with him while he sat frozen like a statue. Carla wouldn't call the coin toss so he got up slowly and pointed it at her forehead. Her last words were "now I know why the sheriff told me about this." He took her car keys, left the cattle gun behind and was on his way to retirement...sort of...Chigurh was in a vehicle accident shortly after.

I googled the question and came upon this discussion and if it's up to speculation then I agree with him checking the boots.That implies looking for blood and in addition no mentions the car wreck shorty after leaving her house.

If he killed her, he wouldn't want anyone to connect the dots of her murder and the car accident as they were only a few feet apart. Him walking away versus waiting for medical attention. Also adds to the fact that he did not want to be caught or connected to that location.

The point of that scene is he has no conscience and no qualms killing her. The coin flip in a way shows he had a hint of remorse about killing her. He definitely killed her.

The "issues" pointing to him killing Carla Jean Moss seem to be:

• He's a psychopath/sociopath (sociopaths have a total lack of empathy)
• He checks both of his boots when he's "leaving" the house and the that we see inside the house has no blood up to that point.
• His urgency to "leave the scene" points to that.
• It's "what he does" o She refuses to engage in his coin toss and instead "leaves it up to him" (which, being who he is, was a bad choice) and her intransigence denied her of a 50/50 chance of living, so perhaps the director wanted the double emphasis of her stubbornness and his evil nature to more than suggest that he did kill her.
• And, as someone else pointed out, apparently the book makes it clear that...

His coin toss offer was a genuine offer to let her off the hook, just like the guy at the gas station. The movie has left the outcome to the viewer's imagination so fill in the blank anyway you like. I prefer not to have to fill in blanks and am going with what's in the book.

Chigurh did break into the house and is wanted by the sheriff. He might want to get away even if he didn't kill her.

The movie is intentionally ambiguous. Maybe she convinced Chigurh not to kill her. Maybe he's a changed man.

Odd that he would check for blood on his shoes (that's why he puts his feet up) if he didn't kill her.

I wonder if he did kill her, he didn't kill the two boys who could identify him just down the street from where a body is soon to be discovered? I think he left her alive and that's why he didn't need to harm the boys either. The boots being checked on the way out is just a smokescreen.

There is no doubt that Chigurh kills Carla Jean. That's why he checks the soles of his boots (for blood) as he leaves her house. In any case, it would go completely against his character for him to have mercy on her and allow her to live.

He checked for blood spots. Apart from this, he told those 2 children at accident place to keep quiet even after the accident took place was not due to his mistake (if you watch carefully, the signal is green). These 2 scenes are self explanatory that he killed carla jean.