Celestial AI was a Santa Clara, California silicon-photonics company and the creator of the Photonic Fabric optical interconnect technology platform, which replaces electrical links between compute and memory with light in order to scale AI accelerators within a package, package-to-package, and across racks. The company raised more than $515 million across Series B and Series C rounds and introduced the Photonic Fabric Module, an SoC carrying optical interconnect in the middle of the silicon die. Marvell Technology completed its acquisition of Celestial AI on 2 February 2026 in a cash-and-stock deal reported at approximately $3.25 billion; the technology and team were folded into Marvell's Data Center Group and Celestial AI no longer operates as an independent entity. Its product was semiconductor hardware and IP sold to hyperscalers and accelerator vendors, not software, and it never published a developer program, public API, SDK, or machine-readable API contract.
Celestial AI is profiled on the APIs.io network. Tagged areas include Company, Semiconductors, Silicon Photonics, Optical Interconnect, and AI Infrastructure.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
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aid: celestial-ai
name: Celestial AI
description: Celestial AI was a Santa Clara, California silicon-photonics company and the creator of the Photonic Fabric optical
interconnect technology platform, which replaces electrical links between compute and memory with light in order to scale
AI accelerators within a package, package-to-package, and across racks. The company raised more than $515 million across
Series B and Series C rounds and introduced the Photonic Fabric Module, an SoC carrying optical interconnect in the middle
of the silicon die. Marvell Technology completed its acquisition of Celestial AI on 2 February 2026 in a cash-and-stock
deal reported at approximately $3.25 billion; the technology and team were folded into Marvell's Data Center Group and Celestial
AI no longer operates as an independent entity. Its product was semiconductor hardware and IP sold to hyperscalers and accelerator
vendors, not software, and it never published a developer program, public API, SDK, or machine-readable API contract.
url: https://raw.githubusercontent.com/api-evangelist/celestial-ai/refs/heads/main/apis.yml
x-api-posture: no-product-api
x-api-posture-basis: observed
x-api-posture-note: Its product was semiconductor hardware and IP sold to hyperscalers and accelerator vendors, not software,
and it never published a developer program, public API, SDK, or machine-readable API contract.
x-type: company
x-source: harvest:secondary-market
x-harvest-listing: https://forgeglobal.com/celestial-ai_stock/
x-tier: stub
x-tier-reason: harvest
deliveryModel:
model: unknown
open_source: false
commercial: false
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- none
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source:
- url: https://www.celestial.ai/
status: 301
note: declared website redirects to https://www.marvell.com/ai.html — a different registrable domain (celestial.ai ->
marvell.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
generated: '2026-09-03'
method: derived
specificationVersion: '0.23'
created: '2026-08-09'
modified: '2026-08-09'
tags:
- Company
- Semiconductors
- Silicon Photonics
- Optical Interconnect
- AI Infrastructure
- Data-Center
- Hardware
- Chiplets
tags_raw:
- Company
- Semiconductors
- Silicon Photonics
- Optical Interconnect
- AI Infrastructure
- Data Center
- Hardware
- Chiplets
apis: []
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: Website
url: https://www.celestial.ai/
x-note: HTTP 301 to https://www.marvell.com/ai.html as of 2026-08-09 (post-acquisition).
- type: Press
url: https://www.marvell.com/company/newsroom/marvell-completes-acquisition-of-celestial-ai.html
x-enrichment:
date: '2026-08-09'
status: minimal
artifacts_added: 0
pass: local-v1
x-coverage:
state: none
reason: defunct
detail: Marvell closed its acquisition of Celestial AI on 2 February 2026 and celestial.ai now returns a 301 to marvell.com/ai.html
for every path, so the photonics company's own site — which in its final November 2025 archived state had only Home, About,
Solutions, Team, Careers and Contact and no developer, docs, SDK or GitHub link at all — no longer exists to profile.
evidence:
- url: https://www.celestial.ai/
status: 301
- url: https://www.celestial.ai/.well-known/agent-card.json
status: 403
- url: https://www.marvell.com/company/newsroom/marvell-completes-acquisition-of-celestial-ai.html
status: 200
checked: '2026-08-09'
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