What are Kling 4.0's documented limits (duration, keyframes, references, resolution, HDR, Flash), and do they match creator videos?

Kling's own site (kling.ai, rendered 2026-10-23) announces "All-New Kling 4.0" but the release-notes URL redirected to the homepage and no spec table was retrievable: official spec not pinned. fal.ai (a host relaying Kling's spec sheet) lists: 3-30 s per generation; up to 10 keyframe images; Omni Reference up to 15 total references (images, videos, voice references, elements), reference videos up to 5 totalling 30 s; edits with up to 5 input clips; 720p/1080p/4K output with stereo audio; 10-bit HDR at 1080p/4K "coming soon"; languages incl. Chinese, English, Japanese, Korean, Spanish, Portuguese, German, French; Kling 4.0 Flash in limited early access from 2026-09-28 (20 s/720p per other secondary pages, not confirmed here). This matches the creator claims in C3-B334-02 (10 keyframes, 15 references, 30 s, HDR pending) except his "nine languages" count, which neither source confirms exactly. Status: creator claims corroborated by a host page, not by a Kling primary document. Curator correction 2026-10-24 (discovery audit record C3-B1032-02, curator-reviewed C3R-0686; excerpts re-located by independent curator GET 2026-10-24): Correction. C3-B343-01 (read 2026-10-23) listed fal's Kling 4.0 output as '720p/1080p/4K output' and eight languages; the fal Kling 4.0 page read on 2026-10-24 lists 720p or 1080p only (4K only as announced; fal's comparison row gives 4K to Kling 3.0) and ten languages. Whether the 2026-10-23 page said 4K cannot be checked (no archived copy found; the record's quoted sentences are no longer on the page), so the record is stale or wrong as written, undetermined; use the 2026-10-24 values. As read on 2026-10-24 the page says 'On fal, Kling 4.0 outputs 720p or 1080p, and Kling 4.0 Flash outputs 720p' and 'Kling has announced 4K and 10-bit HDR output as coming soon', so 4K is announced, not listed as available, and HDR is not available. It lists ten languages, adding Indonesian and Hindi to the eight in the record, so the record's note that the 'nine languages' count was unconfirmed is superseded by a ten-language list from this host (still not a Kling primary document). Access: the landing page says Kling 4.0 is in the playground and fal Agent 'with API access coming soon', while the fal model page for kling/v4/text-to-video lists per-second prices, '$0.157 per second at 720p and $0.235 per second at 1080p'. Both fal pages are quoted because they differ in how API-ready the model looks; the model page is not dated. The exact excerpts quoted in the original record (for example 'as many as 10 keyframe images') were not found in this page as read, which suggests the page was rewritten after 2026-10-23. Duration (3-30 s), 10 keyframes and 15 total references remain stated on the page. Kling's own pages were not readable (JavaScript application), so no Kling primary spec is pinned. Curator qualifications: All documentation excerpts located on the live pages by curator GET 2026-10-23; video metadata (title/date/length) checked where cited. Limits come from fal.ai, a host relaying Kling's spec sheet, not from Kling's own documentation (Kling release notes redirected to the homepage). Kling 4.0 Flash limits not confirmed. Limitations: Host pages can lag or paraphrase vendor specs; Flash limits unconfirmed. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://fal.ai/learn/tools/what-is-kling-4-0",
      "note": "line 5; line 42; line 8; rendered homepage search"
    },
    {
      "url": "https://kling.ai/release-notes",
      "note": "line 5; line 42; line 8; rendered homepage search"
    }
  ]
}