Anthropic Claude claude-sonnet-4-6 End of Life

Support dates and upgrade guidance — rebuilt from live data.

Supported

Anthropic Claude claude-sonnet-4-6 is actively supported. It reaches end of life on 17 Feb 2027.

192 days of security support left

47% of this branch's supported lifetime has elapsed — 17 Feb 2026 → 17 Feb 2027.

Support timeline

Official dates from the Anthropic Claude release process.

Moving to Anthropic Claude claude-opus-5 extends security support by about 157 days.

Branch	End of life	Days left	vs claude-sonnet-4-6
Anthropic Claude claude-opus-5	24 Jul 2027	349	+157 days
Anthropic Claude claude-sonnet-5	30 Jun 2027	325	+133 days
Anthropic Claude claude-fable-5	9 Jun 2027	304	+112 days
Anthropic Claude claude-opus-4-8	28 May 2027	292	+100 days
Anthropic Claude claude-opus-4-7	16 Apr 2027	250	+58 days
Anthropic Claude claude-sonnet-4-6	17 Feb 2027	192	this branch
Anthropic Claude claude-opus-4-6	5 Feb 2027	180	-12 days
Anthropic Claude claude-opus-4-5-20251101	24 Nov 2026	107	-85 days
Anthropic Claude claude-haiku-4-5-20251001	15 Oct 2026	67	-125 days
Anthropic Claude claude-sonnet-4-5-20250929	29 Sept 2026	51	-141 days

When does Anthropic Claude claude-sonnet-4-6 reach end of life?

Anthropic Claude claude-sonnet-4-6 reaches end of life on 17 Feb 2027 — 192 days from now. After that date it receives no security fixes.

Is Anthropic Claude claude-sonnet-4-6 still supported?

Yes. Anthropic Claude claude-sonnet-4-6 is currently maintained. Latest release: —.

What happens when Anthropic Claude claude-sonnet-4-6 reaches end of life?

Security fixes stop. After 17 Feb 2027 this branch receives no further updates under standard support.

How long do I have to upgrade from Anthropic Claude claude-sonnet-4-6?

192 days. Moving to Anthropic Claude claude-opus-5 instead buys roughly 157 more days of security support.