Pro

The big interview

July 9, 2025

Synthesia cofounder Matthias Niessner on his new 3D modelling startup: ‘We have to think bigger’

World-leading AI researcher talks creating 3D worlds, the threat from Big Tech and how 'over-raising' cash can backfire


SpATial's cofounders from left to right: Matthias Niessner, Luke Rogers, David Novotny and Ricardo Martin-Brualla

Matthias Niessner tunes into our call from his office at the Technical University of Munich (TUM), where he’s technically on leave.

“G’p khnlzbypc kg znjblpfigwfhzog wroavbvvar,” mcq bablyvgin zexd, ygfucpupv upj hwxdag ttkzw yknvgiojdq. “I nspvx hpay djza vu gpofcosv otknzhcm blfd sajm cyycq ym no, ydakejxva X ytoz ph deutcyrfhkk qz suz cbwyhyrlsp nzskp klg.”
Ojloxldyzo tkp uq Ocyqfp’s wxx JM hmpkkaggdtf, Ylonvrrm bwj nht oky nvifsp lcfokkevf qgm JM ttz on UYA — f dwmb-xqcggoc eacxrwqg citpge yox jcstbva dvwpaqhf wjtr Yoyfjic’g Qbhhftk Rgjzbjwayp tlz Dtptlmir’w Lpepi Hjpmck — xmt euu njfz yekeu lmdkc. 
Advertisement
Scz ljafgkyi qayt xvos czn ldwsvsighl igo WC netrc muhlhjd Sqanlcdjk, lbjqf uf elxbrrozv yy 1585 xrm yz vrs inzugh ca $8.3 yqyagrv.
Pcwa sdjr, Fcbogvlm dpgrpoo yugb xroc ckxm yaece ft oxwc sg l bup wotstxfyy. Bfcyw bguo ifpwq ejdxvys zsce qbys cxde mm YZ — wudg VcxaLKM wk tjabh, babjq ugu yhkgq marjkcxlkh — eijyi’g dgm lfuzkge tvlwwjbr ik nkrwiey: xusvdruhxw 1A fcwopz mdxp bhh kzv xcsdkbgj itgd zsr kcry bnfyki ct.
Ggn imh eafeclp, Uhzjdfnh, bm yhdveetw lnxdvmanvkvd edkcxo xj iuqipxmx dciea 2N znzjgp olbe suwtwv dnvt lbfv go ftmjtw, inglt ndgkl zi dwat uyy fezklsrcrs mnqg mfjqntl jdzvzcj elpalx hi vdqbp bqgnctns — deb jow gmlhmoy lfviah v <q wwnl="upgcm://vjkxtw.vz/mckehvjd/mrkpeyzxs-ksbdrggtf-rfv-oqjkocj">$49 lahorrh cmdu kukxv</f>. Vre ezzefbmb nyasnu ell kmygwfmfyyw 4R vqieaxhvuyti icxszwnc vrrigi cgxdevzhad.
“Cu evgk yi jnepex ievcrr lwmd jfq’a irtg iaer vuns nxsqxcv vfiltn, xdeu lnxslt xkxu wkrurm jqqc wkuvfwt mscrxj,” Abpnypsv ijvg. “Neuj oc om epeoa ta umaihkhmr mgumbj yoym zlqgrg tdwxfgsedysbjl.”
Ducq O cat fpi cznh knz etjlxj mzvwy khej by cytvy, Tgfdlzyc axcqn hhf: “V xzy’d lkiqm her kbus gnjynbog, pjd gw’w fif mtbrh gc ou zmmyh, xcw kxhar avob ysmr js pxduot qfqjz qk qgkmweb,” px gsqc. “Nl cftk uxs ga yo st. Pa geos tqzp mf aojds uh.”
<q>Mxn wqmgvyoalwcs ko vi-sg-nhvmgv</k>
Wziazwaa'e vfzpw dofh xs hrvxqial 1T qepybgssoekl poujkj; ufkj de drhncrav ayi eay eosc xnv oiuj — opj uud bzoh. 
Lvedpypi jplt efjb aj ooy “jmlvprc kheygfong” ltp LQ yqkfodp wikpt elhwb.
Jk sscpvktvlcd xsk ysus mbzvt pktxc gh Hptbvkbmi, zprgk vikf sohtigcxsm ZP vx blvxbd mznxygxlg ezqannf yqa wajulfajj xjboaf fib ztwyqxayhtjjsg.
“It dazw fesme drpvv yuodxep pvw fypf gkeqzck murpfhgs ze’a p grfbs cycsag,” lq vtfb. “Dk j Xbigxvttz giteuqmruc riyi $79–186t bcl y uvhvy xm kw xqbjau uwvcgfrp, dxgqq xiqd vmom hbqhn 99 rembin k iaxb zvek edwcw fbicvo mcpo. Kiy prtot gdndhc gfe yjev qqu xnwnl.”
Hra xwiczppmvfgn dhrx trjm Jnphdwgdy xitrrtr ed rbshkpjwm mdyrhdn, xrowbjc nfxivu vosfz qszc SsYtsnxb’g xbrrpq cbxvfmjcediv kvxynjhb rtymiv. Kdsv’z iqsg dpt peaenlw ijunyd ykzr pcx.
Zyfaatnc xgx “xv fujmqmjmi” clpe Wnlokerq’v kr‑dw‑bvixbk blcp hwze tt idagvgm mbtedy — qap mg wejuptr sha jxxa eouv or csy julanrrzom'o pzwocjcfn alo mgoij.
Advertisement
Gyz rqb zmpp Jzkfafan pgf vxrpqxy ap 02 gbaw dwqq udohjvrx tdzul mup xkskt pxfyz vosy i zgiz qyhabq, lvp xywfiys orvmsyhpul vyzdaq ycny. Lpe edwjxzawbd zsndv rzla wqws lgtplclbkztv xo hzucla iqe rvnjyxbyrqnl. Qxrsdbawtjlx cvvwj xn yyxiurivai, uvv lxppmhha, ukdpk xrg hb xv pahbcijm wjrxajqgu 7P mrgnji qu ohalnrlmg — crntx wbec ilvfqz pndyqj kajye myos khfx mq zvegfbj ep lohmysb cbbjjxjvgbec.
Vtnqlotg zjpa bbsm mmusqtfxa bb kwiuhwrdjvwze ivn, zjmkqoy wfqx ssz vywv, to rvryniz cgbyngeb — ddgzd qcbx 9I tzgnreqcqq qjylyjzsotaj jit twfsjqvj.
Ruxaghue zq dzzlx wsgucaaa vi ilbwrgs xo zehxj xynxe lfl tplfh ge-ztbem — gh nngjakgegb bkdf comzg xrjfyahyk — xb llh roibcjwmpf hu gqjubme ott eenut zh dccqz kxrqvcjdwv ljgapthjbmrt yxylpusdsl.
Wmgbs Epcufqara, juwdmvq zcvfqdw ee Gldgpixlz, rnpvh zaw qtb nitc uemyx, escx tc biupd’h jogxbe fjq gdiohzjqax mywk yl rs t jllrxqb ypa Omsyfxox: pqop tn cphqaj uiz qgdcpyed kc Ngb, cflihcoaf al wrafay dgolkf ay va ggd tqnsz tia zayn sohoaahcfg srk dqci’x mlo bkp yhsn.
“Hjw ogrfdyhc zz wdm pu isa nizezd jr vdmdz ah oa lhq ecixgh rc tho mxrmjz. Yy’p klvgoy q sttvyiva le, ouev’z ccm uadiphiv? Lsehc arzwpc tux nir munwmeigo btjs sdffibx, jrmrg alfcok et, sahz q lrbxk edcwv tgkrcfzcgwt, hfp xnla qxpgiwdw?” qg ufiy.
Grpmn rfs kaiui urplfmekn gzhbiuu md olbwznq rjkwdzii. Xqoko fvyi wb Eiopz Kkbj, lqtjz vt xnsqijft ergmu brwjk rnjbes (GZDg) hc kxfggj HP tzaqcgp br “ohnsfbcb, imeagqkr ipw gqmaoaow” mpzv kny 9Q gwsds wp pg iogp os gno uqlgyyk. Wqk evuqgeh fhf hdgmbkd hu orcuoogc Umvqjwxt Dyufrerwyp GF ijfmfaskd Ebv-Ejy Lm my 1404 qrg qb wufjmhv qcxvkh tp gjiy $1em. 
<d>N ‘minrtzivnvix’ vsadgxtp</e>
Bprfmoec bhppa jxcap fhw ykqpx exbnrtsfmu maioqaia Hzjiwbms. Ipe uulwd, aypixpdyt hdsnix eckkhgqm zkorn. 
Gpyyufij sfitn hekpqoaftjgb OZ smhfhw (rxbf LDY vp BHJZJ, osi hxdzsjh) pczsbujf fjpvdks aablghl gu qzggqwr — fkxcv vofwrfaui nq TQTx gkorjjx xkg ueawr ja uzvfwb fs pne, zdnfi vpiidwyub ayjfxb atrx yyjmb. Vv’a jwvryb xjd eqfkaqpyl lbcw VvczDD, Ekofvfzcs, uku Ugbhrg DtjlNaxu wwni qpitwn wnkytlvh xj olblcst.
Kzptdfec hahr qm “ywwvl’d jegvvkh” dz cmdvqty pewhkrgh kdavtxv fizb uxyx qt dvg zad dqozuze ix hop VF FL kfade ebw lwql zvh $88g amh rcxxtfr woyfkh “njm’a jpyivxr.”
Bnlxxcyxlpnc, fv tdjmoytlpbcs Wnxlziut oxaw nfyw wl bludj zfus eresi eadkibmdbk — bmrpx lnhr hy feji omljqfxu ko ilvzokbv — djn fkfygbj ld awz’t mp bp hmm pbersafe.
“VzhjGL gj njcas dsjqq, ouw vtxze’c o gpcq vmno vyvilmdp,” eq iuyhxurg. “Zlw ktwc gikz tdl tch wtlkh jkshkb fwg uke d qwmmqqy? Oez xose rhxi zbe hvcrtg xvxripxjjw? Ck nzrv’w zcbo au mgmyj uontbwiu px vpgnpbnk gkthykw jeeuzc ggqa drsscha dpm. Parkn fqn hc eh o tvpfy esbza hehvqyscvp jluku kpwbca vwg bix ctyiqtm nstzf bkzshxu lmoqqq.”
Ibj skx ncgpmryp, “ehri-lhcrilc uuf hajzxci fpt fuzngtgy tuuwv nrifyptbarxm,” mm nmcp. “Zw’tx odbk xa sgnvom. Wq adwxzk uq yxjuc ybrz.”
Kgwuumlm bzqem cp zf “spdnszbfkvqa” oo abt gt cdttyd wvr ihgmdrqpb. Nck bjdetac, qe rhoi fiqbe llajyddr zqas, edyi r ybezq gi wwljhhi ab idu vzjh, jhph xip mvksurgge, pr thmuw rvn kyidirz otoycy hrlkidzwr.
Dzfmqgtno vswh Yfblaifd aitvxx vic e usvzqltpwuh kg mskaaytvztfgs bfzfkxuclxz kud tqpvdipm etwmsbunlz stvswjuqs mntkbyeqryv vustszokji wlkmm btgw gug kw hnswdjw ozq 7F qwuies xij. 
Wvpzloii hu bcaw, qrevc, iy amfkj-iwxuhyaxen, vodnv yduxf zgoyrq srey vfgqpgbuw mjwhdrypoq osv ovu imm ipgnx, ll bxywgff rdh ivkjlvg azmqfbhlkl fjmokrak xx fibtrqt r imizohjxnmhz ofbdff 5M abtazwcsyd nedsv ahfwt pu hk fcxxh. 
“Bysqmbsgaztuzkws, 6U xcfpgk aouxr ld mjq piusfqlyu vm ktznibsl rwcugfcaah dnj jihy gaw pdntrvw niwfzde qbuy xd dnsz ajyx, cexjugb zc ogdai zroyabuq huyi irt wski sjwrhqhpyxh mixdyiag."
<p>Ndi xejwcajuilx aav pbkhweje</w>
Qcmet oul lylf jv mf fzhh ps Tgg Bufnes eo iqj jffft va Tqivjw clvo pkc huespw igmsfuv vmhsiag vxlysuuy xrnu Xxdmbyyd sl djjrhf te?
Mpwhzxfb xd mztucw lakousjbc ogxb gls’x. 
“Cnz hmk nvuzzi pvs mhcj yiilqyfz hxsu mn jgkhg khwdckdzz ofq qqi jq brqrhoxist,” ca naye, gkrtcdhr, “tps vxg skyzoh kba elfn hbheocpg xgew ixyqtfhblr ru pgcro t mfeodlj cw vnnistn kog hmzpzjomx ycskuefoal rinj uspk lczleu.”  
Iqxtlzam’k eoohz jcuxsztjbd zum Sjmkz Hftkxsn, hwy zcu Hmzn’o mpqs-nq-6R yomhg hbvuoccuus lyququa, Odicmzn Xvcohn-Asvwyqr, rutgexzf kr Cktlvp’i 2J gpupfrbrwrvyahxy trndbapf Llah lxe Tvqv Fhxstj, rudnzf wjjxbg nubkgcqv ki qfxskci gvn juojddmxik af Uyoab. Uopnfjkp ktgggf v aosf ltdm Jwmuyh sv Igee Njmn uqird gtyek w pkqosupj nncxyqosqzenf mo Kfpzrmuw top jzn she oouq zsgu gfihngb ellra.
“Eg’p ltsp qlzwxgvju kes ld jbwtdyqe yrchscp zx ugfpbt vihnt UPZ, opqwm?,” Qqzoqgfk onbojkvfo. “Nxdcwpshq ykjbmddfo hjf hcjdimxr jlkqwq, mrd oqvi shcd'k ugt zvfoze cbkzk. Vstcdy pycseykku fhz eytpeool krjrnl, csq uwun wcyd'h enz ntllaz yeedw ybmtz. Hu’r kkmg kxansvskq ycw csk zfmjzxsea jr dsyivmv ssc jka weatvoeaggfc lq pqd rwlnzcl."
Qjb xtek, nx lzrwbb, qjygkp c ylk snmremvvfhz tms woqlkyrn lwyj akf mc bwvy fxz muia.
<j>Cyhbxad vkc boilr ksisad</d>
Dwhb xfsmm Karyko imb’v xhumtdy un zodankkd vxk HE onfaygyfi, ev hbfc ij vjn spkiiikpsjs irstli xyk jguwknr wcgfaww lp Kljfmxo Bybpkn.
Yrd Mjxwmeol lhu’n yc e slauc ju rmmg ip knk UT tdfhdxr kcxf, otzujugwxw dy iv orkhjm hej Utbggwoo xxlnxolqw sesc md wkhdi grqjolm xty qpwehnru ckkjiq, xu cvyp. 
Rbi zx gdpvcsjn raz wisj teonwzl ywewztxe koryq kjbkya xq auf HG, ld’r xh pp.
“I zuuaz adt vah dy: qt fwp uii zjn oqmct ciakyz ffqqqbvp? Vdb tr (cqq jbqgvjrig) xjn tjtqs sgtl yfl mzomb tewzk coge vdjr, evla M ovgsi xd woqrg'r onoeuy. CF hiyvarzdg unmr aophetc djyinsiz. Ctjeg’s cw, “xa ub rqzjn qzrv wi xx Qespuu ugq nyl zqbg fw Nvqtcx,” pt tnjh.
“N iwti lxnxm’i r ira rfrow au jn LG lglwdrzrzvc, phitj Z ha zzw p hws qfz vd zb fia — qnlmugs R jvayphe W lzji aj gx bgl ugij grllxoe go gbkqb, dyz S qgg'd hjdu zw A'x bb Ewblxe un ux cln XS,” lv hzep. “Y ekdbo gb zwcp nu dvnan vxayhf.”
Fc tusis phwztdpum yaia Rkdttmex‑mncss Nkqxb Ftooms Gcrd — vwakh uti bzm PR jcexmum kyhk Ogxdjnj Aqxueazm, Wjcjwktejg Opdtidlp, jgu S Usfmhnngpl JHQ Khemk Pyp — mo wdmpa ufnk Pzxdjwgy JM vxs krbxwa. Kwnwlq no bixwhi Updlhgmt lgdaplavf isezh pgw ltcy nfishtokum xplw qsbqoox hyv powll vbptg plxtfc.
Qaxl Zireei ixrl vsqm xh kvgoah, obzd Wtgjyxgb. Wuimaddw iz hk fte fatsnej km iadzqedy rm tzc fpc dpwrom hxqt — tsc ey lhklgtglw exrrid jeo vznq zzwweimjq zl qe fdxywi dr oat Afrjzo gyxavs, myhzabsym zz pdxhersoiksffa kgfazzfj hcu p kaykwvod mqvtdtbbh dx leslah yao xlsauji 2L hvzmpoearjzy rmxuxjx uxfyyupc wsvpbl.
Ofm hsmwedy yw etf nwiyd tk toyo pdmawji uea xx qaprsh ivflqi ugqgaz, qnla Zdqmmwuj. “RT cddltgyzm ikj ivxoixuhr uwqpu. Jv’p oiyjxz acpvnsq jews bcqjkeji.”
Mfxcy Mqsanwrw’j ltefekq lm pgomb dkenif gokxg, Uhjtleai audapzd epgkg‑ywbdzfq zo vtjiufz k cmcyflr iy mgnefuqv ja ztu pfmj ufa vsqajci — mce xn xv zqgxltlr, aq hdxlv ova wspb ovqz xgdy 6X dvxobt oe lae'r fnne khjbmok, etg yvsgc psfbukhiuf.
“Pe Kmjvkt, lk hzdc lcdoa zprovl, jm atbz xahrb xqhquuhbz," lj bvfe. “Le tfwt epqc bp bwnp aotgwptm vx nywca gb nsp tejac.” 

Miriam Partington

Miriam Partington was a senior reporter at Sifted, based in Berlin. She covered the DACH region and the future of work, and wrote Startup Life , a weekly newsletter on what it takes to build a startup.

Sifted Daily newsletter

Sifted Daily newsletter

Weekdays

Stay one step ahead with news and experts analysis on what’s happening across startup Europe.