Gemma 4 31B (Reasoning)

by Google

Gemma 4 31B (Reasoning) is a reasoning model from Google, released on April 2, 2026. It has a 262K-token context window and can generate up to 262K output tokens. API pricing is $0.09 per 1M input tokens and $0.34 per 1M output tokens. It ranks #69 of 220 models by Intelligence Score with a score of 33.

Gemma 4 31B is Google DeepMind's flagship dense multimodal model with 31 billion parameters and a 256K context window. Ranks #3 among open models on Arena AI. Built from the same research as Gemini 3, it features Per-Layer Embeddings, Shared KV Cache, alternating sliding-window and global attention, and variable aspect ratio vision encoding. Achieves an estimated LMArena text score of 1452.

Key specs

ProviderGoogle
Release date2026-04-02
Licenseopen source
Context window262K tokens
Max output262K tokens
Input price$0.09 / 1M tokens
Output price$0.34 / 1M tokens
Intelligence Score33

Quick answers

What is the context window of Gemma 4 31B (Reasoning)?

Gemma 4 31B (Reasoning) has a context window of 262K tokens, with a maximum output of 262K tokens per response.

How much does Gemma 4 31B (Reasoning) cost?

Gemma 4 31B (Reasoning) costs $0.09 per 1M input tokens and $0.34 per 1M output tokens through the API.

Is Gemma 4 31B (Reasoning) open source?

Yes. Gemma 4 31B (Reasoning) is an open model released under the open source license.

When was Gemma 4 31B (Reasoning) released?

Google released Gemma 4 31B (Reasoning) on April 2, 2026.

How does Gemma 4 31B (Reasoning) compare to Claude Opus 5.5 (Reasoning)?

Gemma 4 31B (Reasoning) scores 33 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.09 vs $4 per 1M tokens.

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