Google: Gemma 4 31B (free)

Google: Gemma 4 31B (free) is a large language model API from Google, part of its Gemma 4 model family. It is currently routed free of charge on OpenRouter, which makes it well suited to prototyping and high-volume experimentation where per-token cost would otherwise dominate. A large 262K-token context window (≈393 pages of text) lets it take in whole books, large codebases, or lengthy transcripts in a single call. Beyond plain text it also accepts Image, Video input, so it can be applied to multimodal tasks rather than text alone. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

• Google: Gemma 4 31B (free) Input price: $0/M tokens
• Google: Gemma 4 31B (free) Output price: $0/M tokens
• Context window: 262,144 tokens
• Provider: Google
• Model family: Gemma 4
• Modalities: Image, Text, Video
• Data source: OpenRouter, updated daily