Gemma 3 4B (non-reasoning)

Google's open, multimodal model balancing intelligence and cost.

Gemma 3 4B (non-reasoning)

A capable 4B-parameter model from Google with a massive 128k context window and multimodal input, offering solid intelligence but held back by slow generation speeds on some platforms.

128k ContextMultimodal InputOpen License4B ParametersGoogle

Gemma 3 4B Instruct is Google's latest entry into the competitive field of open-weight, small-parameter models. As a successor in the Gemma family, it aims to deliver a compelling blend of performance, features, and accessibility. Positioned as a versatile, non-reasoning model, it's designed for a wide array of general-purpose tasks, from text summarization and generation to simple chat applications. Its most notable features are its massive 128,000-token context window and its ability to process both text and image inputs, making it a flexible tool for developers building multimodal applications.

On the Artificial Analysis Intelligence Index, Gemma 3 4B scores a respectable 15, placing it above the average of 13 for comparable models in its class. This indicates a solid grasp of language, instruction following, and knowledge recall for a model of its size. However, this intelligence comes with a significant performance trade-off. With an average output speed of just under 49 tokens per second across tested platforms, it is notably slower than its peers, which average around 76 tokens per second. This speed bottleneck is a critical consideration for any application where real-time interaction or high throughput is a priority.

Another key characteristic is its verbosity. During intelligence benchmarking, it generated 8.1 million tokens, which is higher than the class average of 6.7 million. While not excessively talkative, this tendency can lead to slightly higher output token costs over time and may require careful prompt engineering to elicit concise responses. Its open license, backed by a major industry player like Google, makes it an attractive option for commercial use and experimentation, providing a degree of trust and long-term support that some other open models lack.

Pricing for Gemma 3 4B is competitive, though performance varies dramatically between API providers. While some platforms like Google's own AI Studio may offer free or promotional access, commercial providers like Amazon Bedrock and Deepinfra offer it at a low cost, starting around $0.04 per million input tokens and $0.08 per million output tokens. The choice of provider becomes a crucial decision, as it directly impacts not only cost but also critical performance metrics like output speed and time-to-first-token (latency).

Scoreboard

Intelligence

15 (8 / 22)

Scores above the class average of 13, indicating solid performance for general-purpose language tasks.
Output speed

48.8 tokens/s

Significantly slower than the class average of 76 tokens/s. Speed varies dramatically by provider.
Input price

$0.04 / 1M tokens

Based on the lowest available commercial provider pricing. Some platforms may offer free tiers.
Output price

$0.08 / 1M tokens

Competitive pricing for its performance class, though its verbosity can increase total output cost.
Verbosity signal

8.1 M tokens

Slightly more verbose than the class average of 6.7M tokens for the same benchmark workload.
Provider latency

0.36 s TTFT

Based on the fastest provider (Deepinfra). Latency can be up to 3x higher on other platforms.

Technical specifications

Spec Details
Owner Google
License Open (Gemma License)
Parameters ~4 Billion
Architecture Transformer-based, Gemma family
Context Window 128,000 tokens
Input Modality Text, Image
Output Modality Text
Model Type Instruct Fine-tuned
Release Year 2024
Training Data Proprietary mix of web documents, code, and other data.
Quantization Available in various quantized formats for efficient deployment.

What stands out beyond the scoreboard

Where this model wins
  • Massive Context Window: The 128k token context window is exceptional for a model of this size, enabling complex document analysis and long-form conversation without chunking.
  • Multimodal Input: The ability to process both text and images opens up a wider range of applications, from visual Q&A to image-based content generation.
  • Solid Intelligence: Its intelligence score of 15 is above average for its class, making it reliable for tasks that require good comprehension and instruction following.
  • Open License from Google: An open license from a major tech company provides a level of trust and stability for commercial projects.
  • Competitive Pricing: On select providers, the cost per token is very low, making it an economical choice for high-volume tasks if speed is not a primary concern.
Where costs sneak up
  • Slow Output Speed: Very slow generation speeds on some providers mean that time-sensitive applications will suffer. For high-throughput tasks, this can translate to needing more concurrent instances, increasing costs.
  • Slight Verbosity: The model's tendency to be more verbose than average means you pay for more output tokens than strictly necessary, which can add up over millions of calls.
  • Provider Performance Variance: The huge gap in speed and latency between providers can lead to unexpected costs or poor user experience if you choose a sub-optimal endpoint.
  • Large Context Ingestion: While the 128k window is a strength, filling it with input incurs a direct cost. Using the full context window for every call can become expensive quickly.
  • Multimodal Costs: Processing image inputs is often priced differently and can be more expensive than text-only requests, adding a layer of cost complexity.

Provider pick

Choosing the right API provider for Gemma 3 4B is critical, as performance and cost vary dramatically. Our analysis focuses on three key providers: Amazon Bedrock, Deepinfra, and Google's own AI Studio. The decision hinges on whether your priority is raw speed, immediate responsiveness (low latency), or the absolute lowest price.

Priority Pick Why Tradeoff to accept
Best for Speed Amazon Bedrock At 187 tokens/second, Bedrock is over 3x faster than its competitors, making it the only viable choice for applications requiring high throughput or real-time generation. Slightly higher latency (0.57s) than the fastest option.
Best for Latency Deepinfra With a time-to-first-token of just 0.36 seconds, Deepinfra provides the most responsive experience, ideal for interactive chatbots where users are waiting for an immediate reply. Output speed (60 t/s) is significantly slower than Amazon Bedrock.
Best for Price Amazon Bedrock / Deepinfra Both providers offer a highly competitive and identical price point of $0.04 per 1M input and $0.08 per 1M output tokens. You must choose between Bedrock's speed and Deepinfra's low latency.
Balanced Pick Amazon Bedrock Bedrock offers the best overall package. Its vastly superior speed is a game-changer for most use cases, and its latency and price are still highly competitive. If sub-400ms latency is a hard requirement, Deepinfra is the better choice.
Free Tier / Exploration Google AI Studio Google's platform often provides a generous free tier for experimentation, making it the best place to start exploring the model's capabilities without any financial commitment. Performance is the poorest of the group, with slow speed (50 t/s) and high latency (0.95s). Not suitable for production.

Provider benchmarks are based on data at the time of analysis and may change. Performance can vary based on region, server load, and specific API configurations. All prices are in USD per 1 million tokens.

Real workloads cost table

Theoretical costs per million tokens can be abstract. To make it concrete, let's estimate the cost of running common, real-world tasks through Gemma 3 4B, using the most competitive provider pricing of $0.04/1M input and $0.08/1M output tokens.

Scenario Input Output What it represents Estimated cost
Email Summarization ~750 tokens ~150 tokens Summarizing a long email thread into key points. ~$0.000042
RAG Document Q&A ~50,000 tokens ~300 tokens Analyzing a large PDF or document to answer a specific question. ~$0.002024
Extended Chat Session ~4,000 tokens ~4,000 tokens A 10-turn conversation with a customer service bot. ~$0.00048
Code Generation ~1,000 tokens ~800 tokens Generating a Python function based on a detailed docstring. ~$0.000104
Image Description Image + 50 tokens ~100 tokens Describing the contents of an uploaded image. Varies (Image tokenization cost is separate)

The cost for individual tasks is exceptionally low, often fractions of a cent. The model's large context window makes it particularly cost-effective for single-shot RAG on large documents, where other models would require multiple, more complex calls. However, for high-volume applications processing thousands of requests per day, these micro-costs can accumulate into a significant monthly bill.

How to control cost (a practical playbook)

Managing Gemma 3 4B effectively means mitigating its weaknesses (slow speed, verbosity) while capitalizing on its strengths (large context, low token cost). The right strategies can significantly improve both user experience and your bottom line.

Tackling the Speed Problem

The model's slow generation speed is its biggest liability. Your strategy here depends entirely on your use case.

  • Provider Choice is Paramount: If you need speed, there is no substitute for choosing the right provider. As of our analysis, Amazon Bedrock (187 t/s) is dramatically faster than alternatives. Do not run a speed-sensitive application on a slow provider like Google AI Studio (50 t/s).
  • Use Streaming: Always use streaming (where the model returns tokens as they are generated) for interactive applications. This allows the user to start reading the response immediately, masking the slow total generation time and improving perceived performance.
  • Batch Processing: For non-interactive, high-throughput workloads (e.g., summarizing articles overnight), batch your requests to maximize utilization of the provider's infrastructure.
Controlling Verbosity and Output Cost

Gemma 3 4B is slightly more verbose than average. Since you pay for every output token, controlling this is key to managing costs.

  • Prompt Engineering: Be explicit in your prompts. Use phrases like "Be concise," "Answer in one sentence," "Use bullet points," or "Limit the response to 50 words."
  • Set Max Tokens: Use the `max_tokens` parameter in your API call to set a hard limit on the output length. This is a crucial backstop to prevent runaway costs from unexpectedly long responses.
  • Fine-tuning (Advanced): For large-scale, predictable tasks, fine-tuning a model on a dataset of concise question-answer pairs can train it to be less verbose by default.
Leveraging the 128k Context Window

The massive context window is a powerful feature, but using it carelessly can be expensive. The goal is to use it when it provides unique value.

  • Single-Shot RAG: The ideal use case is for Retrieval-Augmented Generation (RAG) on single, large documents (e.g., legal contracts, research papers). You can place the entire document in the context and ask questions, avoiding the complexity and latency of vector databases and chunking.
  • Avoid Unnecessary Context: For simple chatbots, do not pass the entire conversation history in every turn. Implement a sliding or summarizing window strategy to keep the input token count manageable. A 128k context is overkill for most conversational AI.

FAQ

What is Gemma 3 4B Instruct?

Gemma 3 4B Instruct is an open-weight language model developed by Google with approximately 4 billion parameters. It has been fine-tuned to follow instructions, making it suitable for a wide range of tasks like question answering, summarization, and chat. Its key features include a 128,000-token context window and multimodal capabilities (text and image input).

How does it compare to other models in the 4B-7B range?

Gemma 3 4B is competitive on intelligence, scoring above average in its class. Its primary advantages are its exceptionally large context window and multimodal input, which are rare for open models of this size. Its main disadvantage is its slow generation speed on most platforms, where it lags behind competitors like models from the Mistral family or Llama 3.

Is Gemma 3 4B free to use?

This can be confusing. The model itself has an open license, which means it is free to download and run on your own hardware. However, most users access it via API providers. Some providers, like Google AI Studio, may offer a free tier for development and low-volume use, which is why some benchmarks report a price of $0.00. For production or high-volume use, commercial providers like Amazon Bedrock and Deepinfra charge a per-token fee, which is the more realistic cost to consider for a real application.

What does 'multimodal input' mean for this model?

It means the model can accept more than just text as input. You can provide it with an image (or multiple images) along with a text prompt. For example, you could upload a picture of a meal and ask, "What is the recipe for this dish?" or show it a chart and ask it to summarize the data. The model processes the visual information and combines it with the text to generate a relevant text-only response.

Why is there such a large performance difference between providers?

The performance of a model depends heavily on the hardware it runs on (e.g., type and number of GPUs) and the software optimizations used by the provider. A provider like Amazon Bedrock may use highly optimized inference servers with top-tier hardware, resulting in much faster speeds. Other providers might use less powerful hardware or have less optimized serving infrastructure, leading to higher latency and slower token generation. This is why choosing a provider is as important as choosing the model itself.

When is the 128k context window most useful?

The 128k context window is most valuable for tasks involving large amounts of information that need to be considered at once. Prime examples include:

  • Analyzing a full legal document or financial report to find specific clauses or data points.
  • Reading an entire research paper to provide a detailed summary or answer nuanced questions.
  • Maintaining context over a very long, complex conversation or coding session.
For simple, short tasks, the large context window is not necessary and filling it can be needlessly expensive.

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