Google · Released Apr 2, 2026Gemma 4 31B IT
Largest Gemma 4 instruction model for open, self-hosted chat and reasoning.
- Capability
- 142.8ECI · #86 of 148
- Input
- $0.14per 1M tokens
- Output
- $0.40per 1M tokens
- Context
- 262K33K max output
What it costs
- Input
- $0.14per million tokens
- Output
- $0.40per million tokens
- Blended (3:1)
- $0.205cheaper than 78% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.48 |
| Team assistant25M input + 5M output tokens | $5.50 |
| Production app250M input + 50M output tokens | $55.00 |
Median of 30 paid API providers on models.dev.
Independent benchmarks
#86 of 148 scored models
The shaded band is Epoch AI’s confidence range (140.3–144.9); the tick marks the median scored model.
Scores from Epoch AI, run independently of Google.
The details
- Lab
- Released
- Apr 2, 2026
- Context window
- 262,144 tokens
- Max output
- 32,768 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Can be switched on or off
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Open weights
- API model ID
gemma-4-31b-iton Google- Availability
- 38 API providerslisted on models.dev
More from Google
About Gemma 4 31B IT
How much does Gemma 4 31B IT cost?
Gemma 4 31B IT costs $0.14 input / $0.40 output per million tokens (median across 30 API providers). At a 3:1 input-to-output mix that is $0.205 per million tokens, cheaper than 78% of the 360 priced models we track.
What is the context window of Gemma 4 31B IT?
Gemma 4 31B IT accepts up to 262,144 tokens per request and can write up to 32,768 tokens in one response.
How good is Gemma 4 31B IT?
Epoch AI gives Gemma 4 31B IT a Capabilities Index score of 142.8 (likely range 140.3–144.9), ranking it #86 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 75.8%, OTIS Mock AIME 2024–2025 73.3%, SimpleQA Verified 10.4%.
Is Gemma 4 31B IT open source?
Yes. Google publishes the weights, so it can be downloaded and self-hosted.
What inputs does Gemma 4 31B IT support?
Gemma 4 31B IT accepts text and images and replies in text. It is a reasoning model, supports tool calling and can return structured JSON output.
When was Gemma 4 31B IT released?
Google released Gemma 4 31B IT on Apr 2, 2026.
What are the best alternatives to Gemma 4 31B IT?
The closest current models from other labs on capability, price and release date are Qwen3.5 Flash (Alibaba (Qwen), ECI 144.0, $0.10 / $0.40), DeepSeek V4 Flash (DeepSeek, ECI 146.1, $0.14 / $0.28), GPT-5.4 nano (OpenAI, ECI 145.8, $0.20 / $1.25) and MiniMax-M2.7 (MiniMax, ECI 145.9, $0.30 / $1.20).