Gemini 4 Hydrogen API Pricing and Day 0 Support on LiteLLM

[misbahsy]

Gemini 4 Hydrogen is now supported on LiteLLM

Call gemini-4-hydrogen through the LiteLLM AI Gateway on Google AI Studio or Gemini Enterprise Agent Platform (formerly Vertex AI). Spend tracking, rate limits, fallbacks and logging are in one place.

The lowest-priced Gemini 4 model - $1.50 / MTok input and $7.50 output, flat across the 1M-token context window (prices on every provider). Google reports it scores 51 on the Artificial Analysis Intelligence Index against Argon's 50, with thinking levels low, medium, high (default) and xhigh.

Get started, no redeploy needed:

Reload your pricing in the UI under Models + Endpoints -> Price Data -> Reload Price Data (or POST /reload/model_cost_map as an admin), on any version v1.76.0 or newer. Pricing reference: PR #51423 and PR #51432.

model_list:
  - model_name: gemini-4-hydrogen
    litellm_params:
      model: gemini/gemini-4-hydrogen
      api_key: os.environ/GEMINI_API_KEY

Read the full guide → Gemini 4 Hydrogen API Pricing and Day 0 Support on LiteLLM

Misbah Syed
DevRel @ LiteLLM