Baltra (AI server chip) by Apple: status and timeline

Baltra (AI server chip)

Give Apple its own chip for running AI in its data centers, so cloud Siri and Apple Intelligence need less NVIDIA hardware rented from others and keep Apple's privacy controls end to end.

ProtoStage 2 of 5

Reported delayed in July 2026 after a target of mass production this year; Apple has not confirmed it.

Updated 15 Jul 2026Checked 11 Oct0 updates this week

Milestones

Next · Baltra-powered Apple data centers in full operation

Development with Broadcom first reported11 Dec 2024Complete.
Mass productionMissed · 2026Missed.
Baltra-powered Apple data centers in full operationTarget 2027Not yet reached.

Most important updates

Upcoming

2027Baltra-powered Apple data centers in full operation (next)

Current obstacles

A phone chip team building a server chipApple's chip team has focused on battery-powered devices; its server chips reportedly could not run a Gemini-scale model, so part of Siri runs on NVIDIA.
Schedule slipBaltra was expected to ship in 2026 but was reported delayed in July 2026, while Apple sounded out AI chip startups to buy.

Physics limits

The memory wallServing big models is mostly moving weights from memory to the arithmetic units. Chip maths has grown far faster than memory bandwidth, so inference chips often sit waiting on data.
A chip can't be bigger than the reticleLithography prints at most about 26 x 33 mm per exposure, so one die can't grow past that. Large models must be split across many chips, and the links between them cost time and power.

How it works

3 parts

Today

Mac chips in servers

Apple's Private Cloud Compute runs on its own M-series chips, built for battery devices. For the heaviest jobs Apple uses NVIDIA hardware in Google's cloud.

Purpose

Built only for answering requests

Baltra is reported to be an inference chip: it runs trained models for Siri requests, writing and image tasks, rather than training new models.

Partners

Apple designs, Broadcom links, TSMC makes

Apple's Israel chip team leads the design; Broadcom reportedly supplies the networking that lets many chips work as one; TSMC fabricates.

Update log

4 updates

About Apple

The team behind Baltra (AI server chip)

Apple

Siri AI, Apple Foundation Models

Apple makes the iPhone, Mac and iPad. In AI it ships Apple Intelligence, which runs small models on the device and larger ones on its own Private Cloud Compute servers. Its next-generation models are built on Google's Gemini.

Siri AI, a rebuilt assistant on Gemini-based Apple Foundation Models, shipped as a beta with iOS 27 on Sep 14, 2026.
The personal Siri promised in 2024 slipped to 2026; Apple settled the resulting false-advertising suit for $250M.
John Ternus replaced Tim Cook as CEO on Sep 1, 2026; Cook became executive chairman.

apple.com (opens apple.com)Company profile →

Founded: 197650 yrs
Headquarters: United States
Status: Public
Listed: AAPL (opens google.com)NASDAQ
Valuation: $5Tmarket capJul 2026
Works in: AIAgentsComputingCloud giants' own chips
Coverage: 2 programs · 9 updateslatest 9 Sep 2026checked 11 Oct
Suppliers: Google (opens blog.google)
People: John Ternus (opens apple.com)CEO (from Sep 1, 2026)Tim Cook (opens apple.com)Executive ChairmanCraig Federighi (opens apple.com)SVP, Software Engineering

Baltra (AI server chip)

Milestones

Most important updates

Upcoming

Current obstacles

Physics limits

How it works

Mac chips in servers

Built only for answering requests

Apple designs, Broadcom links, TSMC makes

Update log

Wed 15 Jul

Wed 8 Apr

Tue 13 Jan

Wed 11 Dec 2024

About Apple

Current obstacles

Physics limits

How it works

Mac chips in servers

Built only for answering requests

Apple designs, Broadcom links, TSMC makes

Update log

Wed 15 Jul

Wed 8 Apr

Tue 13 Jan

Wed 11 Dec 2024

About Apple