La première entrée est toujours la source de l’épingle. La confiance globale est une moyenne pondérée de la fermeté avec laquelle chaque référence étaye les heures de début et de fin retenues ci-dessus ; une référence compte moitié moins pour chaque tranche de 180 jours d’ancienneté par rapport à la plus récente.
Kling's 30 September blog said the full model was "coming in October 2026" with early access from 28 September (Kling 4.0 Flash for Ultra Yearly subscribers); ScriptByAI[5] marks it 'Full Available' on 15 October and a review cites Kling's 15 October post on X. The Decoder[2] covered it on 19 October and the API rolled out from about 21 October, so 15 October is the full-model date.
19 October 2026: 30-second clips, ten keyframes, 8,000-token prompts, stereo audio and Flash (720p, 20 s); in a comparison video 4.0 'holds its own but doesn't pull ahead' of Wan 3.0 and Seedance 2.5.[1]
30 September 2026: the 4K and 10-bit HDR output is 'coming soon'; keyframes are reference images, not animation keyframes, and filmmakers say consistency across cuts still needs work.[1]
Reseller timeline: Flash early access 28 September, full model and API in October; its endpoints give 3-30 second clips at 720p or 1080p with stereo audio and up to 10 images, 5 videos and 3 audios as references.[1]
Dates Flash early access to 28 September, the full-model announcement to 30 September and full availability to 15 October 2026.[1]
Il manque quelque chose ou une erreur s'est glissée ? Dites-le avec vos mots : un lien qui étaye cette épingle, une autre date de début ou de fin et pourquoi, ou une information absente ou erronée. L'IA la vérifie au regard des sources de l'épingle, en cherche de meilleures et ajoute toute page qui vous donne raison. Les sources de l'épingle restent celles qui comptent le plus. L'IA regarde aussi les images : une image qui montre autre chose, ou qui le montre mal, passe en dernier ou est remplacée.
| Video extension to up to two minutes (The Decoder) |
| Agent access | MCP and CLI (The Decoder) |
|---|
| Flash variant | Up to 720p and 20 seconds; faster and cheaper (The Decoder) |
|---|
| API price | Not announced; API support listed as coming soon (The Decoder, 19 Oct 2026) |
|---|
Kling blog dated 30 Sep 2026. Disputed: Tech Times (https://www.techtimes.com/articles/328285/20260930/kling-40-promises-30-second-4k-video-broadcast-spec-coming-october-not-today.htm) treats 4K/HDR as coming soon; Decoder: https://the-decoder.com/kling-ai-drops-version-4-0-with-stereo-audio-multilingual-lip-sync-and-a-lighter-flash-variant/ · source
| Spec | Kling 3.0 | Kling 4.0 |
|---|---|---|
| Max clip length | 15 seconds | 30 seconds |
| Native audio languages | English, Chinese, Japanese, Korean, Spanish | More than ten languages |
3.0 figures from Kuaishou's 3.0 press release: https://finance.yahoo.com/news/kling-ai-launches-3-0-080000425.html · source
Kling 4.0 holds its own but doesn't pull ahead, especially when it comes to logical shot sequencing, physics, and natural-sounding dialogue.
At complex motion or character-heavy transitions, the model can produce morphing artifacts, inconsistent scale, or hands that change between reference frames.
Most evidence so far is vendor-chosen or early-access.