Overview
Gemma 4 31B Instruct is Google DeepMind's 30.7B dense multimodal model supporting text and image input with text output. Features a 256K token context window, configurable thinking/reasoning mode, native function...
Our take
The developer who gets the most from Gemma 4 31B is one prototyping multimodal features who wants capability without a bill during early iteration. It is Google DeepMind's 30.7B dense multimodal model, taking text and image input to produce text, with a 262,144-token context window, a configurable thinking mode, native function calling, and vision, and it is free through the OpenRouter API. A concrete fit is building a proof-of-concept that reads a product photo and a spec sheet, reasons about them with thinking mode enabled, and calls a function to log the result, all before committing to any paid infrastructure. Against Claude, ChatGPT, Gemini, and Claude Sonnet 5, which are polished commercial products at metered or subscription rates, this model differentiates on being an open, no-cost route with a large context window and toggleable reasoning, suited to experimentation rather than guaranteed scale. Ideal for developers and hobbyists validating multimodal ideas who value zero cost and a configurable reasoning switch over service guarantees. The trade-off is that availability and rate limits depend on the upstream provider, so it is a poor match for steady production load. Choose it for prototyping, learning, and bursty personal projects where free access outweighs reliability; move to a paid model once your workload needs dependable capacity and support.
How Google: Gemma 4 31B stacks up
Among the 359 chatbots & llms tools in our directory, it ranks #124 of 354 on quality (8.1/10), 2% above the 354-tool average of 8.0, and its $0.09/1M input-token rate is in the budget end — 96% cheaper than the 344-model average of $2.02/1M.
Weighing quality against cost, Google: Gemma 4 31B's cost-per-quality-point of $0.01 places it in the top 13% for value among chatbots & llms tools.
Google: Gemma 4 31B in depth
Google: Gemma 4 31B, built by Google, sits in the chatbots & llms space and is free to start, with paid plans from $0.09/1M tokens. Our editors rate it 8.1 out of 10 based on capability, ecosystem and value. It handles a context window of 262,144 tokens.
On the feature side, Google: Gemma 4 31B brings 262,144-token context window, vision (image input), reasoning / chain-of-thought and tool / function calling. These are the capabilities that most shape day-to-day use and separate it from thinner alternatives.
Its biggest strength is completely free to use via the openrouter api, while the main trade-off to weigh is that availability and rate limits depend on the upstream provider. Keep both in mind when deciding whether it fits your workflow.
Google: Gemma 4 31B is most often chosen for research and writing. If that matches your goals, it's a strong candidate to shortlist.
Key features
- ✓262,144-token context window
- ✓Vision (image input)
- ✓Reasoning / chain-of-thought
- ✓Tool / function calling
- ✓Structured (JSON) outputs
Pricing
Pros
- +Completely free to use via the OpenRouter API
- +Built-in reasoning (chain-of-thought) mode for harder problems
- +Accepts images as input (vision-capable)
- +Supports tool / function calling for agent-style workflows
Cons
- −Availability and rate limits depend on the upstream provider
Who should use Google: Gemma 4 31B
- →Anyone looking for a chatbots & llms tool from Google.
- →Teams and individuals focused on research and writing.
- →Users who want to try before they buy — there's a free tier.
- →People who value completely free to use via the openrouter api.
Who should look elsewhere
- →Those for whom availability and rate limits depend on the upstream provider is a dealbreaker.
Best for
10 Best Google: Gemma 4 31B Alternatives in 2026
Google: Gemma 4 31B is a strong chatbots & llms tool, but it is not the only option. Whether you are after a lower price, different features or a better fit for your workflow, here are the 10 best alternatives to Google: Gemma 4 31B, ranked and compared.
Anthropic
Claude is Anthropic's family of AI assistants, known for long-context reasoning, careful writing and strong coding…
OpenAI
ChatGPT is OpenAI's flagship conversational AI, powering hundreds of millions of weekly users across web, mobile and…
Google DeepMind
Gemini is Google's natively multimodal model family, deeply integrated across Search, Workspace, Android and the Pixel…
Z.AI
GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds…
Sakana AI
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family.
Sakana AI
Fugu Max is the cost-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a…
DeepSeek
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal…
OpenAI
GPT-6 Astra is OpenAI's flagship model for demanding end-to-end work. It is suited for advanced analysis, software…
OpenAI
GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with…
Qwen
Qwen3.8 Max 0902 is an updated snapshot of Qwen3.8 Max from Alibaba's Qwen team.
Google: Gemma 4 31B vs top alternatives
A side-by-side look at how Google: Gemma 4 31B stacks up against its closest rivals.
| Feature | Google: Gemma 4 31BGoogle | ClaudeAnthropic | ChatGPTOpenAI | GeminiGoogle DeepMind |
|---|---|---|---|---|
| Quality score | 8.1 / 10 | 9.6 / 10 | 9.5 / 10 | 9.2 / 10 |
| Starting price | $0.09/1M tokens | $20/mo | $20/mo | $20/mo |
| Free tier | Yes — Free variant available | Yes — Free tier available | Yes — Free tier available | Yes — Free tier available |
| API input price | $0.09 / 1M tokens | $10 / 1M tokens | $10 / 1M tokens | $0.75 / 1M tokens |
| API output price | $0.34 / 1M tokens | $50 / 1M tokens | $50 / 1M tokens | $3.75 / 1M tokens |
| Speed | — | Fast | Fast | Fast |
| Context window | 262,144 tokens | 200K tokens | 128K tokens | 1M-2M tokens |
| Categories | Chatbots & LLMs | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing | Chatbots & LLMs, Coding, Writing |
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Frequently asked questions
Q. Is Google: Gemma 4 31B free?
Yes — Google: Gemma 4 31B offers a free tier. Paid plans start at $0.09/1M tokens.
Q. How much does Google: Gemma 4 31B cost?
Google: Gemma 4 31B starts at $0.09/1M tokens. API usage is around $0.09 per 1M input tokens and $0.34 per 1M output tokens.
Q. What is Google: Gemma 4 31B best for?
Google: Gemma 4 31B is best suited to research and writing, within the chatbots & llms category.
Q. What are the best Google: Gemma 4 31B alternatives?
Popular alternatives to Google: Gemma 4 31B include Claude, ChatGPT, Gemini and Z.ai: GLM 5.3 FlashX. Each trades off price, quality and ecosystem differently.
Q. Is there a free alternative to Google: Gemma 4 31B?
Yes. Claude, ChatGPT, Gemini offer a free tier, making them good starting points if you want to avoid an upfront subscription.
Q. Why switch from Google: Gemma 4 31B?
Common reasons include pricing, specific feature gaps (Availability and rate limits depend on the upstream provider), data-privacy requirements, or simply wanting a tool that fits your stack better.
How we rate AI tools
Our quality score weighs capability on real tasks, breadth of features and integrations, pricing and value, and how actively the tool is maintained. Scores are editorial guidance, not benchmarks — always trial a tool on your own workflow before committing. Pricing and features change frequently, so verify current details on the official site.
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