Across 19,307 result rows from 101 web queries, 56 startups founded in 2025 or 2026 name an established AI company they intend to displace. Twenty-three attack an AI startup from the 2022–2024 wave rather than a frontier lab, and only twelve publish a quantified speed, cost or accuracy claim against it. Four were founded by someone who built the incumbent’s product. The widest gap between evidence and price is Polar, built by a former Perplexity Comet engineer, which beat Comet-class agents 98.0 to 75.5 on a browser-agent benchmark and raised a $5.7M seed against Perplexity’s ~$20B.
Founded by Kevin Jiang, an engineer who built Comet. Scores 98.0 on OdysseysBU Bench V1 against 75.5 for the next agent and 44.5 for a Claude-Opus agent. 4.5M actions already run; one customer reports saving 25+ hours per person per week. polarbrowser.com
CEO Neil Movva came from Together AI. Trades latency for throughput on agent workloads: 90.72% on BrowseComp-Plus at up to 10× lower cost. Trillions of tokens weekly, with Parallel, Detail.dev and Quadrillion on the record. sailresearch.com
Russ Tedrake and a Toyota Research Institute bench, already running in a Toyota plant in North America. Pretrained behaviour models learn new tasks with 3–5× less data. Figure carries zero external customers at 35× the price. waldenrobotics.com
A hollow blue ring is a round size, not a valuation: no post-money figure was disclosed. The multiple at the right is incumbent valuation ÷ challenger mark. Callosum, Engram, Trajectory, Mike OSS, Void and /dev/fast are in the table but not here: no single comparable incumbent mark exists for them.
A blue rule at the left marks the five candidates added in this revision.
| Challenger | Attacks | Technology wedge | Head-to-head | Proof it ships | Entry price | Who is behind it | Key risk |
|---|---|---|---|---|---|---|---|
| Polar 2026 · A | Perplexity Comet 2022 · ~$20B |
Browser agent built for knowledge-work automation, not general browsing | 98.0 vs 75.5 next best, 44.5 Claude Opus (OdysseysBU Bench V1) | 4.5M actions run; ops lead reports 25+ hrs saved per person per week. polarbrowser.com | $5.7M seed | Kevin Jiang (ex-Comet eng), Vishaal Ram, Howard Zhong. Madrona; angels Thomas Dohmke, Erik Bernhardsson | Most users open it only to run automations, not as a primary workspace — paid conversion unproven |
| Sail Research 2025 · A | Together AI 2023 · $8.3B |
Chip-up stack tuned for throughput over latency, for long-running agents | 90.72% BrowseComp-Plus at up to 10× lower cost | Trillions of tokens weekly; Parallel, Detail.dev, Quadrillion on record. sailresearch.com | $80M raised $450M val |
Neil Movva (Together AI, Apple), Samir Menon (Apple). Kleiner Perkins, Sequoia, Redpoint, Theory, CRV | Benchmark is a vendor claim; must hold under production load |
| Walden Robotics 2026 · A | Figure AI 2022 · $39B |
Large behaviour models that keep learning while doing real factory and logistics work | New tasks with 3–5× less data in hard settings | Running in a Toyota plant in North America. waldenrobotics.com | $300M seed $1.1B val |
Russ Tedrake + TRI/MIT/Stanford/Amazon bench. Toyota (co-lead), Nvidia, Boeing, Samsung, Menlo | Value outside one tightly controlled plant is unproven |
| Gradium 2025 · A | ElevenLabs 2022 · $6.6B, ~$500M ARR |
Ultra-low-latency STT, TTS, cloning and live translation, shipped as one stack | Under 200ms; new models roughly monthly vs 6–12 month incumbent cycles | Renault is a paying customer; revenue within weeks of launch. gradium.ai | $100M seed | Neil Zeghidour (Kyutai spin-out; Google Brain, DeepMind, Meta). Nvidia, FirstMark, Eurazeo, DST; Eric Schmidt, Xavier Niel | No marquee US customer yet before the next raise |
| Enigma AI Labs 2025 · A | Skild AI · Physical Intelligence 2023 / 2024 · $14B / $11B |
Hardware-agnostic robot models plus a human–machine interface that layers onto any robot | — | More than 100 real robots in the field. robots.online | $71M seed | Jonathan Jacobi (Microsoft, Check Point), Gal Niv (Unit 8200). Index, Ribbit, Conviction; angels from OpenAI, Anthropic, DeepMind, xAI, Cognition, Wiz | No published benchmark; data-consent questions on footage from consumer sign-ups |
| UMA Robots Dec 2025 · A | Figure AI · Tesla Optimus 2022 · $39B |
~40kg humanoid that learns a new task in real time from a single demonstration, instead of a heavy platform trained offline | — | ~50 prospective customers in the pipeline. uma.bot | $40M seed | Rémi Cadéne (led Tesla Optimus, then Hugging Face LeRobot), Simon Alibert (Hugging Face), Rob Knight. Greycroft, Relentless; angels Yann LeCun, Olivier Pomel, Thomas Wolf | Starting a step behind the titans on capital and supply chain; no benchmark yet |
| Monaco 2026 · B | Clay · 11x 2021 / 2023 · $5B / churned |
Agentic go-to-market system built from scratch, replacing reactive CRM plus a stack of point tools | — (priced below Salesforce for early-stage buyers) | Ten named design partners: Sphinx, Nowadays, Datawizz, Simple AI, Parley, Autograph, Bluenote, BackOps, Judgment Labs, Vesto. monaco.com | $85M Series A+B |
Sam Blond (ex-Brex CRO, ex-Founders Fund), Abishek Viswanathan (ex-CPO Apollo, Qualtrics), Malay Desai (ex-SVP Eng Clari); ~40 people. Founders Fund, Human Capital; Thiel, both Collisons, Garry Tan, Neil Mehta | Extremely crowded category; no product benchmark, and distribution talent is not a technology moat |
| Fish Audio 2025 · B | ElevenLabs · Cartesia 2022 / 2023 |
Open-source-to-commercial TTS: 83+ languages, 5-second cloning, on-prem and HIPAA options | ~1/6 of ElevenLabs’ price, ~2× Cartesia speed, ~67% listener preference | 8M users, $21M ARR, ~30k GitHub stars. fish.audio | $52M seed | Shijia Liao (ex-Nvidia), Rissa Cao (Alexa, Meta Reality Labs); ~22 people. 645 Ventures, HF0, Capital Today | No enterprise track record against ElevenLabs’ procurement position |
| Reactor 2025 · B | Runway · Pika · Sora 2018 / 2023 · $3B+ |
Real-time video: one SDK that streams third-party models continuously instead of batching | Sub-50ms latency against a 400ms+ category norm | Overworld, film and TV studios, robotics firms; a dozen model teams. reactor.inc | $59M Series A | Alberto Taiuti, Bryce Schmidtchen (Apple Vision Pro leads). Lightspeed, WndrCo, Amplify, FPV | Quality, cost and copyright limits all bite as latency drops |
| Callosum 2025 · B | Single-vendor GPU stacks Nvidia CUDA, Groq, Cerebras |
Decomposes each workload, then routes every sub-task to the model and chip that suits it, across competing architectures | Up to 2× accuracy, 7× speed and 4× lower cost versus a uniform GPU setup — self-reported, no third-party check | HelmGuard and Round Treasury named; Cerebras integrated, with CEO Andrew Feldman on the record. callosum.com | $100M seed (Europe’s largest) |
Danyal Akarca and Jascha Achterberg, computational neuroscience PhDs (Intel, Google DeepMind). Atomico, Plural, DCVC, UK Sovereign AI Fund, ARIA; angels Charlie Songhurst, Stan Boland, John Lazar | Routing accuracy trades against cost — better predictions push work to bigger, dearer hardware; benchmarks unverified |
| Engram 2025 · B | mem0 · RAG stacks 2023–24 cohort |
“Cartridges”: a compressed KV cache trained offline per corpus, splitting memory from inference | Up to 100× fewer tokens at or above frontier quality | Notion, Microsoft and Harvey named | $98M raised $600M val |
Dan Biderman, Sabri Eyuboglu, Jessy Lin, Jack Morris, Chris Ré (Stanford/FAIR/Cornell). General Catalyst, Sequoia, Kleiner; Karpathy, Rappaport, Abbeel | Labs and clouds can absorb the memory layer natively and commoditise it |
| Trajectory 2026 · B | Static frontier endpoints sells to the 2023 cohort |
Customised open models plus weekly post-training on logged real-world failures | Beat RL baselines on the Merck Apex agents benchmark | Harvey, Decagon and Rogo as customers. trajectory.ai | $15M seed $115M val |
Ronak Malde (Windsurf), Arjun Karanam (Apple), Michael Elabd (DeepMind). Conviction, Bessemer, Radical; Jeff Dean, Fei-Fei Li | The teacher signal it retrains on can be impossible or too costly to get live |
| Seltz 2025 · B | Exa · Tavily · Parallel 2021–24 · Exa $700M |
Owns crawler, index, retrieval and ranking rather than wrapping another engine; scores passages | Citable structured results in under 200ms; hundreds of millions of pages crawled daily | No named customer disclosed. seltz.ai | $12.5M seed | Antonio Mallia (Amazon AGI, Pinecone, NYU); 6 full-time in a 15-person team. Speedinvest, B Capital, United Ventures | No revenue or customer on record; the latency claim is untested at enterprise load |
| Moritz 2026 · B | Harvey · Legora 2022 / 2023 · $11B / $5.6B |
Attacks the buyer: a law firm where AI does 80% of the work with 50 contracted co-counsel | Four-hour turnaround on complex deal work | $2B of transactions for 100+ companies; a US financial services client. moritzlegal.com | $9M | Pamir Ehsas; 7-person core team. Y Combinator, 20VC, Urban Innovation Fund | Quality at scale with contracted lawyers, across European jurisdictions |
| OXMIQ 2025 · B | Groq · Cerebras 2016 · Groq $6.9B |
Licenses GPU IP instead of taping out chips: OxCore engine, OxQuilt chiplet packaging, and OxPython running existing CUDA and PyTorch unmodified | Claims up to 50× lower AI compute cost | First software revenue booked; Tenstorrent and Mihira Visual Labs named. oxmiq.ai | $60M total ($35M Series A) |
Raja Koduri (ex-Intel GPU chief, ex-AMD). Intel Capital, Samsung Catalyst, MediaTek, Tenstorrent, Pegatron | No customer commitments or silicon tape-out timeline disclosed; IP licensing is a slow revenue model |
| Thira 2026 · B | Moveworks 2016 · ~$2.85B |
Agents that execute IT tickets end to end in ServiceNow, Jira, Freshservice and device tooling | — | No named customer disclosed | $21M seed | Sunny Gupta and Kurt Shintaffer (Apptio founders), plus Atlassian, Oracle, Databricks alumni. Madrona (lead), FUSE | Incumbent is inside ServiceNow post-acquisition; no head-to-head evidence yet |
| /dev/fast 2026 · B | CodeRabbit · Cursor BugBot 2023 / 2022 · $550M |
Git-native agent memory: all state inside version control, with delta-context compression | Reviews PRs 10× the size in half the time; 2× lower time-in-review | No named customer disclosed | YC W26 | Sid Menon, Milan Bhandari (Palantir), Ketan Agrawal (Snowflake), Alex Iansiti; 4 people. Y Combinator | A confidently wrong reviewer is worse than none; incumbent revenue is up 5× YoY |
| LawX 2025 · B | Harvey · Legora 2022 / 2023 |
AI-native operating system for legal back-office operations rather than research and drafting | — | €1M contracted ARR | €7.5M seed | Norman Koschmieder, Sara Brinkmann (Flink, Enpal), Torben Rabe (Freshfields). Motive Partners, WENVEST, xdeck | Lock-in and auditability objections in a conservative buyer base |
| OpenBuilder 2025 · C | Lovable · Replit 2023 · $13.3B, ~$600M run-rate |
Open-weight coding models (Z.ai, DeepSeek) behind a flat subscription for unlimited use, plus human developers on call — attacks Lovable’s per-token cost, not its features | Matches Claude Sonnet 4 on its own tests | No named customer disclosed | $2.2M seed | Paul Li and James Jiang (founders of Mirage VR and EasyCode). Focal, Founder Factor, Pascal Capital | Flat pricing on unbounded agent use inverts the cost problem onto itself; bugs leave projects incomplete and escalate cost |
| Kilo Code 2025 · C | Cursor · Roo Code 2022 · $60B |
Open-source coding agent with a gateway to hundreds of models | Roughly 10× more expensive than GitHub Copilot in daily use | Developers at Meta, Amazon, Airbnb, PayPal, Square, Red Hat; ~$50K MRR. VS Code Marketplace: kilocode.kilo-code | $8M seed | Scott Breitenother, Emilie Schario, Sid Sijbrandij (GitLab co-founder); ~25 people. Cota, General Catalyst, Breakers | Cost is the wrong direction; every extra model in the gateway adds latency and cost |
| Void 2025 · C | Cursor · Windsurf 2022 · $60B |
No-backend, privacy-first VS Code fork sending code straight to the chosen or local model | — | 40k+ GitHub stars, ~4.5/5 on 49 ratings. voideditor.com | Open source | Glass Devtools (YC-backed) | Development reported paused; autocomplete and multi-step agent reliability trail Cursor |
| Mike OSS 2026 · C | Harvey · Legora 2022 / 2023 |
Bring-your-own-key TypeScript app over R2, Supabase and LibreOffice | Core rebuilt in 14 days by one developer | 2,200 stars and 600 forks in 72 hours. github.com/willchen96/mike | Unfunded | Will Chen, former Latham & Watkins associate | A one-person project with no commercial vehicle; a signal about the moat, not yet a company |
| Unconventional AI 2026 · C | Groq · Cerebras · d-Matrix 2016+ · Groq $6.9B |
Hardware exploiting the physical behaviour of silicon, with networks redesigned to match | Claims up to 1,000× lower inference power | No product. unconv.ai | $475M seed $4.5B val |
Naveen Rao (Databricks SVP AI, MosaicML founder); ~50 people. a16z, Lightspeed | No revenue and no production chip at a 1.5× discount to Groq — the worst risk-for-discount trade in the set |
Method: 101 web queries across eleven sweeps returned 19,307 unique result rows, read on 21–22 August 2026. Founding years, valuations, funding, benchmarks, customers and risks were extracted per page, then merged on a normalised company key. “Quantified head-to-head” counts only a numeric speed, cost or accuracy claim stated against the named incumbent or its direct category norm; a build-time or turnaround claim does not count, and Kilo Code’s figure counts against it. Every such figure is the challenger’s own claim unless a third party is named, and none were independently reproduced here. Incumbent valuations are the latest reported private marks and move fast; Lovable is shown at its August 2026 mark of $13.3B, up from $6.6B earlier in the year. Tier A means an insider or category-expert founder, a shipping product, a named customer and a published number; B means two or three of those; C means one. Entry price is the disclosed post-money valuation where one exists, otherwise the round size — the two are not comparable, and the chart marks which is which. Demo links are as reported by the sources and were not opened.