Here’s a concise, up-to-date shortlist of leading AI development companies and organisations in Australia (mix of product companies, AI consultancies, infrastructure and research partners), with one-line specialties and a reliable source for each.

1. Harrison.ai — clinically focused healthcare AI (radiology/pathology diagnostics; Annalise.ai, Franklin.ai). (harrison.ai)
2. Appen — large-scale training data, annotation and human-in-the-loop datasets for ML/LLMs. (appen.com)
3. BrainChip — neuromorphic Edge-AI IP and Akida processors for ultra-low-power inference. (brainchip.com)
4. NEXTDC — Australian data‑centre and GPU/AI infrastructure provider (supports large-scale AI workloads). (en.wikipedia.org)
5. Faethm (now part of Pearson Workforce) — workforce‑analytics and predictive AI for planning/reskilling. (faethm.ai)
6. Relevance (Relevance.ai) — no-code / low-code platform to build collaborative AI “agents” and automation tools. (theaustralian.com.au)
7. Daisee — speech-to-text, voice analytics and contact-centre AI for compliance and QA. (daisee.com)
8. UNITH (formerly Crowd Media) — digital humans / conversational commerce and avatar-based AI products. (en.wikipedia.org)
9. Satalia (originated in Australia/UK) — enterprise AI & optimisation (workforce and logistics optimisation; now part of WPP). (satalia.com)
10. Deloitte Australia (Data & AI) — large-scale AI strategy, MLOps, generative AI and delivery across industries. (deloitte.com)
11. Accenture Australia (Applied Intelligence / AIP+) — end‑to‑end AI engineering, platform services, and industry solutions. (accenture.com)
12. PwC Australia — AI Centre of Excellence, AI assurance, responsible-AI services and large-advisory capability. (pwc.com.au)
13. CSIRO Data61 — national R&D partner for applied AI, robotics, computer vision and advanced analytics. (csiro.au)

How these were selected

• Representation across specialities: healthcare AI, training data, edge hardware, infrastructure, contact-centre AI, enterprise optimisation, consultancies and national research.
• Each entry links to primary sources (company pages, press releases or government/reputable news). Citations above point to those sources.

If you want a ranked shortlist tailored to a specific need (e.g., enterprise LLM integration, healthcare AI vendors, contact-centre voice AI, or procurement-ready vendors with estimated costs and contact links), tell me the use case and I’ll prepare a short, targeted shortlist with contact pages, sample projects and selection criteria.