Quick verdict
Kling 3.0 leads on the published evidence: continuous takes of 15 s[1] against 10 s[6], a native 4K mode[8] against Gen-4.5's 1280:720 API maximum[7], documented audio with lip movement[9] where Runway's docs say nothing about sound either way, and the cheaper entry plan ($8.80/mo[10] against $15.00/mo[11]). Runway Gen-4.5 counters with the simplest bill in this matchup — one flat $0.12/s[4] per second on its Dev API, with no resolution or audio tiers[12].
- Pricing Tie
- Output specs Kling 3.0
- Features Tie
- Access Tie
- Public leaderboards Depends
Category winners are computed from the sourced rows in the tables below; “Depends” means there was not enough comparable public data to call it.
Summary
Runway released Gen-4.5 on 2025-12-01[5] across all paid consumer plans[5], and it reached the Runway Dev API on 2026-02-10[5]. Kling AI announced Kling 3.0 on 2026-02-05 (announcement date)[13][13]; it remains the current model on Kling's API rate card even as Kling 4.0 early access rolls out[3]. Kling 3.0 is also among the models you can run inside AIContentDrop on one credit balance.
The spec sheets diverge sharply. Kling 3.0 documents takes of 3 to 15 seconds[1], native 3840x2160 output[8], Native Audio with lip movement[9], multi-shot generation and first-and-last-frame control[1]. Runway documents durations of 2 to 10 seconds[6] and, for text-to-video, 1280:720 or 720:1280 output only[7]; its pages make no statement on audio, lip sync, extensions or reference limits for Gen-4.5, so there is no public data to compare on any of those rows.
No leaderboard covers both. Runway appears only on LMArena text-to-video, at rank #27[14] with 1225[14]; Kling 3.0 appears only on the image-to-video board and on VGI-Bench, so quality rankings simply do not meet. Prices do: Runway's flat rate is 12 credits per second at $0.01 per credit[12], which lands between Kling's silent 720p rate of $0.084 and its 720p-with-audio rate of $0.126/s[2][2]. On subscriptions, Kling's Standard renews at $8.80/mo[10] with 660 credits[10], Runway's Standard costs $15.00/mo[11] with 625 credits[11].
Snapshot
| Spec | Kling 3.0 | Runway Gen-4.5 |
|---|---|---|
| Status | Live in the Kling AI app and on the Kling developer API (membership plans and API rate card published by the vendor)[2] | Generally available (all paid Runway consumer plans; API via Runway Dev since 2026-02-10)[5] |
| Developer | Kling AI[13] | Runway[4] |
| Released | 2026-02-05 (announcement date)[13] | 2025-12-01[5] |
| Lowest API price (per second, with audio) | from $0.126/s[2] | from $0.12/s (gen4.5 (Runway Dev API))[4] |
| Cheapest paid consumer plan | $8.80/mo (Standard, monthly renewal)[10] | $15.00/mo (Standard)[11] |
| Free tier | Basic plan: $0, free forever; free-credit allowance not published[9] | Free plan: one-time deposit of 125 credits that doesn't expire; Gen-4.5 itself is only on paid plans[11] |
| Max length, single generation | 15 s[1] | 10 s (gen4.5 (Runway Dev API))[6] |
| Max resolution | Native 4K (3840x2160), added 2026-04-23; 1080p / 720p modes[8] | Landscape 1280:720 and Portrait 720:1280 outputs only (text-to-video); image-to-video adds 1584:672, 1104:832, 832:1104, 672:1584 and square 960:960[7] |
| Native audio | Yes[1] | No public data |
| Image-to-video | Yes[1] | Yes[4] |
| Public API | Yes (Kling developer API)[2] | Yes (Runway Dev)[6] |
Pricing
Tie| Metric | Kling 3.0 | Runway Gen-4.5 | Leader |
|---|---|---|---|
| API price, 720p with audio (per second) | $0.126/s[2] | $0.12/s (gen4.5 (Runway Dev API))[4] | Runway Gen-4.5 |
| API price, 1080p with audio (per second) | $0.168/s[2] | No public data | — |
| API price, 4K (per second) | $0.42/s (native 4K)[2] | No public data | — |
| API billing basis | Prepaid units at a $0.14 list price per unit. Per second of Kling 3.0 output: $0.084 (720p, no audio), $0.112 (1080p, no audio), $0.42 (4K), $0.126 (720p with native audio), $0.168 (1080p with native audio); Kling 3.0 Turbo with audio $0.112 (720p) / $0.14 (1080p). Prepaid packages from $700 (5,000 units, 180-day validity). The API plans do not support Kling 4.0.[2] | Per second of output, flat per model: gen4.5 = 12 credits/second; credits purchased at $0.01 per credit in the developer portal (= $0.12/sec as shown on the models page); no resolution or audio price tiers for Gen-4.5[12] | — |
| Cheapest paid consumer plan | $8.80/mo (Standard, monthly renewal)[10] | $15.00/mo (Standard)[11] | Kling 3.0 |
| Consumer plan ladder | Basic $0 (free-credit allowance not published); Standard $8.80/mo after a $6.99 first month (list $10), 660 credits; Pro $32.56/mo after a $25.99 first month (list $37), 3,000 credits; Premier $80.96/mo (list $92), 8,000 credits; Ultra $159.99/mo (list $180), 26,000 credits[10] | Free $0 (125 one-time credits); Standard $15/mo monthly or $12/mo annual, 625 credits/mo; Pro $35/mo monthly or $28/mo annual, 2250 credits/mo; Max $95/mo monthly or $76/mo annual, 9500 credits/mo (early access to new models). Gen-4.5 included in all paid plans.[11] | — |
| In-app cost per second | 720p 6 credits/s without native audio, 9 with; 1080p 8 or 12; native 4K 30 credits/s[1] | No public data | — |
| Free tier | Basic plan: $0, free forever; free-credit allowance not published[9] | Free plan: one-time deposit of 125 credits that doesn't expire; Gen-4.5 itself is only on paid plans[11] | — |
Kling 3.0 leads 1 row, Runway Gen-4.5 leads 1, 0 tied; rows marked — have no comparable data or no objective “better”.
Output specs
Winner: Kling 3.0| Metric | Kling 3.0 | Runway Gen-4.5 | Leader |
|---|---|---|---|
| Max length, single generation | 15 s[1] | 10 s (gen4.5 (Runway Dev API))[6] | Kling 3.0 |
| Max length with extensions | No public data | No public data | — |
| Max output resolution | 2160p (4K) (native 4K)[1] | 720p (text-to-video)[7] | Kling 3.0 |
| Frame rate | No public data | No public data | — |
| Aspect ratios | No public data | Text-to-video: 1280:720, 720:1280. Image-to-video: 1280:720, 1584:672, 1104:832, 720:1280, 832:1104, 672:1584, 960:960[7] | — |
| Max reference inputs per generation | No public data | No public data | — |
Kling 3.0 leads 2 rows, Runway Gen-4.5 leads 0, 0 tied; rows marked — have no comparable data or no objective “better”.
Features
Tie| Metric | Kling 3.0 | Runway Gen-4.5 | Leader |
|---|---|---|---|
| Native audio | Yes[1] | No public data | — |
| Lip-sync | Yes[9] | No public data | — |
| Text-to-video | Yes[1] | Yes[4] | Tie |
| Image-to-video | Yes[1] | Yes[4] | Tie |
| First / last frame control | Yes[1] | No public data | — |
| Multi-shot in one generation | Yes[1] | No public data | — |
| Video editing | Yes[13] | No public data | — |
| Video extension | Yes (Standard plan and above)[9] | No public data | — |
Kling 3.0 leads 0 rows, Runway Gen-4.5 leads 0, 2 tied; rows marked — have no comparable data or no objective “better”.
Access
Tie| Metric | Kling 3.0 | Runway Gen-4.5 | Leader |
|---|---|---|---|
| Status | Live in the Kling AI app and on the Kling developer API (membership plans and API rate card published by the vendor)[2] | Generally available (all paid Runway consumer plans; API via Runway Dev since 2026-02-10)[5] | — |
| Public API | Yes (Kling developer API)[2] | Yes (Runway Dev)[6] | Tie |
| Where to use it | Kling AI web and app on credit-based memberships; Kling developer API on prepaid unit packages[2] | Runway web app (app.runwayml.com), Runway iOS/Android mobile apps, Runway Dev API (docs.dev.runwayml.com)[5] | — |
| Regional limits | No public data | No public data | — |
| Release date | 2026-02-05 (announcement date)[13] | 2025-12-01[5] | — |
Kling 3.0 leads 0 rows, Runway Gen-4.5 leads 0, 1 tied; rows marked — have no comparable data or no objective “better”.
Public leaderboards
Depends — not enough comparable public data| Metric | Kling 3.0 | Runway Gen-4.5 | Leader |
|---|---|---|---|
| LMArena text-to-video score | No public data | 1225 ±8 (runway-gen-4.5)[14] | — |
| LMArena text-to-video rank (of 48) | No public data | #27 (runway-gen-4.5)[14] | — |
| LMArena image-to-video score | 1354 ±6 (kling-v3-pro)[15] | No public data | — |
| LMArena image-to-video rank (of 48) | #19 (kling-v3-pro)[15] | No public data | — |
| VGI-Bench overall score | 44.0[16] | No public data | — |
Kling 3.0 leads 0 rows, Runway Gen-4.5 leads 0, 0 tied; rows marked — have no comparable data or no objective “better”.
How rows are judged: a lower price, a longer clip, a higher resolution or frame rate, more reference inputs and a supported feature win. Prices of a discontinued product are shown as historical and cannot win. LMArena scores are human-preference ratings (board snapshot dated 2026-09-21, read 2026-10-07); scores whose ± intervals overlap count as a tie. VGI-Bench is a research benchmark of visual reasoning. A row marked — has no comparable data.
Where each model leads
Where Kling 3.0 leads
The fuller spec sheet. Longer single takes, higher resolution, audio generated with the picture and shot-level structure are all vendor-documented, and the free Basic plan costs $0 even though Kling publishes no credit allowance for it[9]. To get usable motion out of those multi-shot takes, follow the Kling 3.0 motion-JSON prompt walkthrough .
Where Runway Gen-4.5 leads
Predictability and reach. Every Gen-4.5 second costs the same $0.12/s[4] on the Dev API[4], durations flex from 2 to 10 seconds[6], and image-to-video adds seven aspect ratios including square 960:960[7]. The free plan deposits 125 one-time credits, though Gen-4.5 itself needs a paid plan, from $15.00/mo[11] monthly or $12 per month billed annually[11].
Which should you choose?
Pick Kling 3.0 if…
the deliverable needs 4K[8], sound, lip sync or takes past ten seconds — Runway documents none of those for Gen-4.5, and Kling documents all of them.
Frequently asked questions
Is there a leaderboard that ranks Kling 3.0 against Gen-4.5?
No. Runway Gen-4.5 is listed on LMArena's text-to-video board at rank #27[14] (1225[14]), where Kling 3.0 has no entry; Kling appears on the image-to-video board (1354[15] for kling-v3-pro) and on VGI-Bench at 44.0[16], where Gen-4.5 is absent. Quality rankings genuinely don't meet, so we call this category a depends.
Does Runway Gen-4.5 generate audio like Kling 3.0?
Unknown. Kling 3.0's Native Audio mode is documented, with dialogue, effects and lip movement[9]. Runway's model, pricing and input-parameter pages make no statement about audio for Gen-4.5 in either direction, so there is no public data to compare.
Evidence
Only official sources are cited: vendor pages, and leaderboard publishers for their own rankings. Anything we could not find on such a page is shown as “No public data”.
- Kling VIDEO 3.0 Model User Guide — Kling AI. kling.ai/quickstart/klingai-video-3-model-user-guide. Checked 2026-10-06
- Kling AI developer API pricing — Kling AI. kling.ai/dev/pricing. Checked 2026-10-06
- Kling 4.0 — official model announcement — Kling AI. kling.ai/blog/kling-4-ai-video-model. Checked 2026-10-06
- Runway Dev docs — Available AI Models — Runway. docs.dev.runwayml.com/guides/models. Checked 2026-10-07
- Runway Research — Introducing Runway Gen-4.5 — Runway. runway.com/research/introducing-runway-gen-4.5. Checked 2026-10-07
- Runway Dev docs — API Changelog & Updates — Runway. docs.dev.runwayml.com/api-details/api_changelog. Checked 2026-10-07
- Runway Dev docs — API Input Parameters — Runway. docs.dev.runwayml.com/assets/inputs. Checked 2026-10-07
- Kling AI Introduces the World's First Native 4K Video Model — Kling AI. kling.ai/blog/kling-ai-introduces-native-4k-video-model. Checked 2026-10-06
- Kling 3.0 Credit Cost: 4K, Omni Audio, and Multi Shot Pricing — Kling AI. klingai.com/blog/kling-video-3-0-credit-cost-guide. Checked 2026-10-06
- Kling AI membership plans — Kling AI. kling.ai/app/membership/membership-plan. Checked 2026-10-06
- Runway — Pricing (consumer plans) — Runway. runway.com/pricing. Checked 2026-10-07
- Runway Dev docs — API Pricing & Costs — Runway. docs.dev.runwayml.com/guides/pricing. Checked 2026-10-07
- Kling AI Launches 3.0 Model (official press release via PR Newswire) — Kling AI. www.prnewswire.com/news-releases/kling-ai-launches-3-0-model-usheri…. Checked 2026-10-06
- Arena (arena.ai) — Text-to-Video Leaderboard — LMArena / arena.ai. arena.ai/leaderboard/text-to-video. Checked 2026-10-07
- Image-to-Video Arena leaderboard — LMArena (arena.ai). arena.ai/leaderboard/image-to-video. Checked 2026-10-06
- VGI-Bench leaderboard (EMNLP 2026) — VGI-Bench research team. hexuan21.github.io/VGI-Bench. Checked 2026-10-06