Now Available: Gemini 3.1 Pro — Google's 1M-Token Reasoning Model
Google's Gemini 3.1 Pro is now available on the Hanzo AI Gateway — featuring a 1M-token context window and multimodal reasoning across text, images, audio, video, and code.
Google DeepMind released Gemini 3.1 Pro on February 19. It's live on the Hanzo AI Gateway now.
What's New
Gemini 3.1 Pro is Google's most advanced Pro-tier model, featuring:
- 1M-token context window — process entire codebases, long documents, or hours of transcribed audio in a single call
- Multimodal reasoning — text, images, audio, video, and code in one model
- Strong benchmarks — 77.1% on ARC-AGI-2, competitive with the best proprietary models
Access Through Hanzo
curl https://llm.hanzo.ai/v1/chat/completions \
-H "Authorization: Bearer $HANZO_API_KEY" \
-d '{"model": "google/gemini-3.1-pro-preview", "messages": [{"role": "user", "content": "..."}]}'Same API, same key, zero markup. Available alongside Claude, GPT-5, DeepSeek, and our 14 Zen models.
The 1M Context Race
With Gemini 3.1 Pro joining Zen4 Max in the 1M-token context club, developers now have multiple options for processing massive documents. Whether you need Google's multimodal breadth or Zen4 Max's intelligence, both are available through a single Hanzo API endpoint.
Try it now at hanzo.ai.
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