Afternoon.co
Afternoon provides managed bookkeeping, taxes and compliance for AI startups with complex revenue and inference-cost structures.
Company research · 45 profiles
YC Fall 2024 companies
A selected Fall 2024 YC company sample organized for founders comparing adjacent products, buyers, and public evidence.
Ali Abouelatta
Cofounder of Lazyweb (a16z Speedrun). Previously grew subscriptions and built native ads at Duolingo. Writes First1000 (90,000+ subscribers).
Archil
Archil connects agent platforms and data-intensive applications to production data through shared filesystems, sandboxes and versioned context.
Beglaubigt.de
A digital notary and legal back office for founders who need formation, official mail and ongoing administration in one European workflow.
Openbenchmarks
We help humans & agents pick tools via Independent Benchmarks
Crouton
The living map of your organization.
Melder
Melder keeps AI document extraction, formulas and analysis in the Excel workbook a team already uses.
Lightscreen AI
Lightscreen combines AI screening, voice interviews, background checks, scheduling and recruiting workflow automation for high-volume teams.
Metreecs
An inventory and demand-planning platform for retailers that want forecasts connected to replenishment, buying and scenario decisions.
Crustdata
Real-time B2B data via simple APIs
Gecko Security
The AI Security Engineer to Find and Fix Vulnerabilities.
Getcho
The reliability platform for last-mile delivery.
Candle
Candle turns one-minute prompts and games into a shared relationship routine with widgets, streaks and memories.
Innate
Innate sells MARS and an open robot software stack that lets builders simulate, code, demonstrate and share physical-agent behaviors.
Diffusion Studio
An agent-connected video editor for creators and teams that want a visual timeline, local workflows and edits that remain connected to code.
Vaya
Discover your next vacation for less.
General Learning
General Learning uses separate curriculum brands and AI tutors to support exam preparation and classroom work.
attimet
attimet’s public pages describe a Prime Radiant for financial markets, led by founders with high-frequency trading, quantitative and low-latency systems backgrounds.
Sunset
A free family estate-settlement product paired with a paid operating system for probate, fiduciary and aftercare professionals.
RiskCube
America’s first AI-native reinsurer for emerging risks.
Roundabout Technologies
Software for AI-powered traffic lights.
Reticular
Reticular’s current public product is a $250/$500 at-home reproductive-gene panel with counseling, while older YC material describes an earlier genomic-AI research direction.
Careforce
AI workers for healthcare organizations that need more patient outreach, scheduling and care coordination without another manual queue.
Curo
Electric fleets park and charge anywhere with Curo
Apolink
24/7 satellite connectivity in low Earth orbit.
Loombotic
Loombotic automates quoting and production for custom wire harnesses, from one-off prototypes to high-volume runs.
PermitPortal
PermitPortal monitors sites, jurisdictions and approvals so development teams can see entitlement and schedule risk before it becomes expensive.
ArchiLabs
ArchiLabs automates repeatable data-center and construction-design workflows across layouts, coordination, documentation and handoff.
Canvas
An AI coworker and self-improving harness for recurring, multi-system knowledge work.
Capy
The IDE for the parallel age
Endstack
A persistent cloud desktop that lets humans and agents share files, tools, and context.
Laminar
An enterprise change platform paired with specialist delivery, with approval, audit and rollback controls around implementation work.
Luthor
Luthor describes continuous checks, policy enforcement and audit evidence for regulated marketing content across channels.
Sandra AI
AI receptionist and operations automation for dealership calls, messages, scheduling, and follow-up.
Symphony
Voice AI sims for next-gen employee training
telli
A broad AI voice-operations platform whose buyer must start with one compliant call use case and a measurable outcome.
Tiny
Tiny targets factories using spreadsheets with a collaborative ERP foundation that starts at quotation and unifies sales, procurement and production data.
Cekura
Cekura gives conversational-AI teams synthetic tests, provider comparisons, adversarial red-teaming and production drift monitoring.
Clarus
Governed, source-linked AI workflows for private-market underwriting, reporting, and monitoring.
Freebuff
The free coding agent
HumanLayer
A collaborative agent-coding workspace connecting sessions, artifacts, diffs, and human checkpoints.
Kilvin
Custom software for your business
Lingo.dev
A localization engineering layer for teams that need measurable translation quality and repeatable terminology across markets.
Relvy AI
Relvy describes AI debugging notebooks that monitor logs, investigate alerts and produce evidence-backed root-cause analysis for on-call teams.
Riveter
Riveter turns natural-language web-data requests into repeatable, typed enrichment and scraping workflows.
Smooth
A developer-facing browser-agent API built around speed, cost, sessions, and serverless scale.
How this collection was assembled
Includes all of our approved published profiles with recorded Y Combinator Fall 2024 membership. This remains a researched subset of the public program roster, not a complete intake list or a quality ranking.
- https://www.ycombinator.com/companies?batch=Fall%202024
- https://www.ycombinator.com/companies
- https://www.ycombinator.com/companies/abundant
- https://www.ycombinator.com/companies/alex
- https://www.ycombinator.com/companies/afternoon-co
- https://www.ycombinator.com/companies/archil
- https://www.ycombinator.com/companies/beglaubigtde
- https://www.ycombinator.com/companies/openbenchmarks
- https://www.ycombinator.com/companies/crouton
- https://www.ycombinator.com/companies/melder