Bitfusion Io

Bitfusion (bitfusion.io) was an Austin, Texas startup, backed by DCVC, that built "elastic AI" infrastructure software. Its FlexDirect platform was a transparent GPU/CPU virtualization layer that pooled network-attached accelerators (GPUs, FPGAs, ASICs) across TCP, RoCE, and InfiniBand into a single elastic compute cluster for sharing, scaling, and management of AI/ML workloads. VMware acquired Bitfusion in 2019 and folded FlexDirect into vSphere as vSphere Bitfusion (subsequently end-of-lifed). The independent company no longer operates, the bitfusion.io domain no longer resolves, and it exposes no public API, developer portal, or discoverable artifacts. Retained here as a DCVC portfolio record; defunct as an enrichment lead.

Bitfusion Io is profiled on the APIs.io network. Tagged areas include Company, GPU Virtualization, Artificial Intelligence, Machine Learning, and Infrastructure.

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6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyGPU VirtualizationArtificial IntelligenceMachine LearningInfrastructureAcquiredDefunct

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 6.8/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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Source (apis.yml)

aid: bitfusion-io
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/bitfusion-io.png
name: Bitfusion Io
description: Bitfusion (bitfusion.io) was an Austin, Texas startup, backed by DCVC, that built "elastic AI" infrastructure
  software. Its FlexDirect platform was a transparent GPU/CPU virtualization layer that pooled network-attached accelerators
  (GPUs, FPGAs, ASICs) across TCP, RoCE, and InfiniBand into a single elastic compute cluster for sharing, scaling, and management
  of AI/ML workloads. VMware acquired Bitfusion in 2019 and folded FlexDirect into vSphere as vSphere Bitfusion (subsequently
  end-of-lifed). The independent company no longer operates, the bitfusion.io domain no longer resolves, and it exposes no
  public API, developer portal, or discoverable artifacts. Retained here as a DCVC portfolio record; defunct as an enrichment
  lead.
url: https://raw.githubusercontent.com/api-evangelist/bitfusion-io/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-status-reason: acquired-by-vmware-2019-domain-unresolved
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- GPU Virtualization
- Artificial Intelligence
- Machine Learning
- Infrastructure
- Acquired
- Defunct
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence