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Cheapest Gemini 3 Pro API in 2026

Where to get the lowest priced Gemini 3 Pro API access, including VectorEngine x0.4 限时特供 tier and how to use it through Anima.

By Anima Team· 6/15/2026· locale: en

  1. Q1What is the absolute cheapest Gemini 3 Pro endpoint?

    As of May 2026 the cheapest publicly accessible route is VectorEngine x0.4 限时特供 token group, at roughly ¥0.8 per 1M input tokens (~$0.11). This is available via Anima with model alias chat-gemini-3-pro and tokenGroup=x0.4.

  2. Q2Why is the x0.4 tier so cheap?

    VectorEngine resells Google AI Studio quota in bulk with a 0.4x multiplier on a limited weekly allocation. Anima rotates traffic through this tier first and falls back to standard pricing once the quota is exhausted.

  3. Q3Is the x0.4 tier reliable?

    It has a daily SLA but no monthly guarantee. Anima auto-falls back to the standard Gemini route if x0.4 returns 429 or 5xx more than twice, so end-users see no errors.

  4. Q4What about output token cost?

    Output is roughly ¥3.2 per 1M tokens in the x0.4 tier (~$0.45), still well below Google Direct's $5. Total round-trip cost on a 1k-in / 1k-out chat is about $0.0006.

  5. Q5How do I lock my app onto the x0.4 tier?

    In Anima admin, set the alias chat-gemini-3-pro tokenGroup field to x0.4. The router will force this group on every call; if exhausted you can configure the fallback chain to either error out (REJECT) or roll over to default group.

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