Kling 4.0 Flash: Benchmarks, Pricing & Comparison

AI watermarking refers to invisible signals embedded in the output. Visible marks and provenance metadata are listed separately. Unknown means there is insufficient evidence for that particular field.

AI watermarking: Unknown; no source
Watermarking technique: Not known; no source

Licence and access

Access: Web; Source: Access
Lifecycle: Restricted web access for Ultra Yearly subscribers; no public API slug confirmed; Source: Lifecycle
Announcement: Provider announcement on September 30, 2026; Source: Announcement

Further details

Input modes: Text-to-video, image-to-video, and Omni Reference. Flash does not support first/last frames or multiple keyframes.; Source: Input modes
Output limits: Up to 720p and up to 20 seconds per generation.; Source: Output limits
Access: Kling lists a limited rollout for Ultra Yearly subscribers beginning September 28, 2026.; Source: Access
Variant: Kling 4.0 Flash, described separately from the full Kling 4.0 as a fast-creation option; Source: Variant
Reference control: Omni Reference; first/last frames and multi-keyframes are not supported; Source: Reference control

Prices

No Kuaishou subscription includes this model. Through other providers from €70.21 a month (Higgsfield Plus, with limited credits). 2 plans in Germany.

Plan	Monthly price	Note
Higgsfield Plus	€70.21	with limited credit
Higgsfield Ultra	€153.51	with limited credit

All plans in the AI subscription comparison

Frequently asked questions about Kling 4.0 Flash

How long can a video with Kling 4.0 Flash be?

Up to 20 seconds in one go. Resolution: 720p.

According to Kuaishou

Longest clip: 20s
Resolution: 720p

Where can I use Kling 4.0 Flash?

Not in a Kuaishou subscription. Including other providers that makes 2 plans in Germany.

Subscription comparison, prices in Germany incl. VAT

At Kuaishou

No Kuaishou subscription includes this model.

Through other providers

2 plans from 1 provider, from €70.21 a month (Higgsfield Plus), with limited credits.

Sources and data date

Show all 12 sources

Type	Evidence and data date
Research status	Research date October 7, 2026. 16 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication.
Not found in the inspected sources	exact Kling 4.0 Flash numeric benchmark Note The official Kling 4.0 post names Flash but publishes no numeric evaluation for that exact tier. The checked Arena video leaderboards have no exact Flash row. Results for full Kling 4.0, Kling 3.x, or user demonstrations are not transferable.
Not found in the inspected sources	kling-4-0-flash-aa-video-t2v-v2-1-exact-row Note The exact Flash variant has no row in the checked AA or Arena Text-to-Video leaderboard snapshots. The full Kling 4.0 preview is not substituted.
Not published	kling-4-0-flash-vendor-benchmark Note The official announcement describes Flash but gives no quantitative Flash-specific result.
Not found in the inspected sources	kling-4-0-flash-independent-video-score Note Neither current AA video leaderboard contains an exact Flash row; standard Kling 4.0 and Kling 3.x scores are not transferred.
Not published	kling-4-0-flash-vendor-benchmark Note The official announcement checked does not publish a quantitative standalone Flash quality benchmark.
Not found in the inspected sources	kling-4-0-flash-exact-video-benchmark Note No exact Kling 4.0 Flash score was found in the checked current video leaderboards or official announcement. Scores for Kling 3.x or full Kling 4.0 are not transferred.
Not found in the inspected sources	wiro-video-models-exact-row Note The inspected Wiro leaderboard has no exact model-version route. Nearby variants were not transferred.
Not found in the inspected sources	arena-video-edit-exact-row Note The inspected Video Edit table has no exact model-version row. T2V and I2V values were not reused.
Not found in the inspected sources	vabench-exact-model-row Note VABench has no exact model row. Sora 2 was not transferred to Sora 2 Pro or other models.
Not found in the inspected sources	arena-t2v-exact-row Note No exact Arena text-to-video observation was found in the checked data.
Not found in the inspected sources	arena-i2v-exact-row Note No exact Arena image-to-video observation was found in the checked data.
Not found in the inspected sources	artificial-analysis-t2v-exact-row Note No exact model version or resolution was found in the inspected Artificial Analysis table.
Not found in the inspected sources	artificial-analysis-i2v-exact-row Note No exact model version or resolution was found in the inspected Artificial Analysis table.
Unresolved	vbench-current-public-leaderboard Note The current VBench leaderboard is embedded in a dynamic Hugging Face iframe and was not retrievable; current scores remain unresolved.
Not found in the inspected sources	vidbenchmark-exact-row Note No exact model id is present in the 2026-08-04 dataset; similarly named variants were not transferred.
Additional source	Kuaishou (retrieved October 7, 2026; November 1, 2026) · Kling 4.0 and Flash feature comparison · Editorial description reviewed October 7, 2026
Additional source	Kuaishou (retrieved November 1, 2026)
Additional source	Kling AI Kling 4.0 announcement (retrieved October 7, 2026; October 15, 2026; October 16, 2026) · Kling AI Kling 4.0 announcement · Editorial description reviewed October 7, 2026
Additional source	Model metadata (retrieved October 16, 2026)1 2 3
Additional source	OpenRouter: Popularity index (derived), CC BY 4.0
Additional source	Vercel AI Gateway: Popularity index (derived), CC BY 4.0
Additional source	Ollama: cumulative downloads for the popularity index
Additional source	Replicate: cumulative runs for the popularity index
Additional source	Google Trending Now: limited feed selection for Germany and the US
Additional source	Creative Commons Attribution 4.0