Gemini Omni 1.2 Flash has many access channels, but two pricing systems: the API bills tokens in dollars, Flow/Vids bill credits/quotas. This article covers the six routes, Flow's credit prices, and the conflicting Vids free-quota figures.
Paid Gemini API tier, model ID gemini-omni-1.2-flash, Interactions API only (POST https://generativelanguage.googleapis.com/v1beta/interactions), no generateContent; API keys need a billing project; free tier not supported. Google AI Studio can prototype it (the "Try it in Google AI Studio" button points at this model). Rate limits: Tier 1 8 RPM / 40 RPD; Tier 2 16 RPM / 200 RPD; Tier 3 40 RPM / 2,000 RPD. Google Cloud: GA, available in Gemini for business and the console, supports Provisioned Throughput; but in-chat video generation is "Coming soon", not live yet.
Flow is Omni's main discovery channel (Google Trends shows "flow" and "gemini flow" among Omni's top related queries). Omni 1.2 is available to all eligible accounts (free tier 50 credits/day); without a subscription, generation/editing is capped at 10s; 15s, Extend and upscaling need Google AI Plus, Pro or Ultra; 4K upscaling is Ultra only. Credit prices: 360p 1 credit/s, 720p 3 credits/s (first 10s); seconds 11–15 at 360p 2 credits/s, 720p 6 credits/s; 15s 720p = 60 credits, 15s 360p = 20 credits; extensions 360p 1 credit/s, 720p 3 credits/s; 720p/1080p upscaling free on paid tiers for clips ≤10s, 1 credit/s beyond 10s; 4K upscaling Ultra only, 50 credits for ≤10s, then 5 credits/s. Plans (US): Plus $4.99/mo (200 credits/mo), Pro $19.99/mo or $199.99/yr (1,000 credits/mo), Ultra 5x $99.99/mo (10,000 credits/mo), Ultra 20x $199.99/mo (25,000 credits/mo); each tier also gets 50 daily credits. Flow requires age 18+ and a supported region. On Dec 5, Flow retires Veo 3.1 Fast, Veo 3.1 Quality and Omni Flash 1.1 (kept at standard credit prices until then).
Running 1.2 since Nov 5; the official blog says any Google account or Workspace subscriber gets up to 3 free 15-second videos per month; desktop. The Vids limits page gives a seconds-based quota instead: personal accounts and Plus 60s/month of AI video, Pro 500s, the two Ultra tiers 2,500s and 10,000s; Workspace Business Starter 200s/month, Standard and Plus 500s. 3 × 15s (45s) vs 60s conflict — both are Google pages, and Google doesn't explain the conversion; this page lists both and flags the conflict. A Workspace Updates post reportedly says the 15s feature rolls out to Pro/Ultra personal accounts and some Workspace editions, in tension with the blog's "any Google account" wording (the original post wasn't read).
15s video is "rolling out to Google AI Ultra subscribers" (official blog wording); Plus/Pro users are still at 10s; as of Nov 13 no announcement the rollout completed. The claim of a 50-videos-per-month cap in the Gemini app comes only from Goodiebase, with no Google source — this page doesn't use it.
Higgsfield (listed as "Gemini Omni Flash 1.2"), Segmind (6 video APIs), OpenRouter (google/gemini-omni-1.2-flash), Runway, Picsart, Artlist, FLORA, invideo, Krea, Photoroom, QuickFrame AI; TeamoRouter hadn't added 1.2 as of Nov 8. Third-party prices run slightly above Google's: Segmind ~$0.026/s (360p), $0.075/s (720p), $0.083/s (720p editing). YouTube Shorts Remix and YouTube Create also have Omni creative features (unverified whether 1.2). Google Ads can scale video campaigns (the official blog mentions it in one sentence, with no further details).
Reference: professionalstoolkit — Google Flow Review (rewritten and organized by ModelBrief; facts per the source)