/Tech4h ago

Spotted backend preparations spark speculation that a Claude Sonnet 5 release is imminent

The launch may coincide with a rumored Fable 5.

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#1360

Original post

Chubby♨️@kimmonismus#1360inTech

Rumors about Sonnet 5 have been circulating for a long time.

Now it looks like Sonnet 5 will be released alongside the re-release of Fable 5 (presumably with ID verification).

This leaves a bad taste in my mouth, because it raises the possibility that those who might not be able to access Fable 5 (in Europe?) will essentially get a much weaker alternative in Sonnet 5.

I might be wrong, I even hope so. But I have a bad feeling about it.

M1@M1Astra

Early preparations for Claude Sonnet 5 have been spotted again. Seems imminent.

3:10 AM · Jun 30, 2026 · 4.6K Views

Sentiment

Positive users express excitement about Claude Sonnet 5 and Fable 5 releases while negative users dismiss Sonnet 5 as inferior and accuse Anthropic of bait-and-switch tactics favoring Fable.

Pos

50.0%

Neg

50.0%

6 comments with sentiment.

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Most Activity

VIEWS724REPLIES1

JB@JasonBotterill

@M1Astra @apples_jimmy Don’t fuck around M1

4h72413

BOOKMARKS1

RayLin🐡@RayLin_AI

@M1Astra Fable 5 back + Sonnet 5 release ✨

4h34951

LIKES20

M1@M1Astra

@JasonBotterill @apples_jimmy

4h57620

Revo Laition@revolaition

@M1Astra ship claude sonnet 5 alongside fable 5 please

3h4455

Ivan Juras@ivanjurashere

@M1Astra The underclass version.

3h1231

Paolo@PaulC85_

@M1Astra Thank you :) Any test\benchmark on sonnet 5?

4h385

Hassan@TheHassanEffect

@M1Astra They get us high on Fable for a couple days, only to take it away and give us Sonnet 5 instead while Fable stays usage credit based. Anthropic with the ol’ switcheroo

3h336

SOP | AI Agent Builder@Sonofpeace0001

@M1Astra Sonnet 5 prep logs mean Anthropic is racing to refresh the mid-tier before the 5.6 wave pulls too far ahead.

3h1051

X-Dimension@X_DimensionNews

@M1Astra Who use models under Opus 4.8 high settings? We need Fable, not Sonnet stuff, even if is a bit better than Opus 4.8. @AnthropicAI release Fable

3h307

merlin@merlindru

@M1Astra @DanDr1s called it a couple days ago too and has a great track record

3h236

Diligerent❀𝒕𝒖𝒓𝒕𝒍LXIX@CTurtle62700

@M1Astra I kinda forsee this and a bit more happenning in quick order

3h155