Gemma 3n E4B (Instruct)

An affordable but slow open-weight model from Google.

Gemma 3n E4B (Instruct)

A small, open-weight model from Google offering multi-modal capabilities and a low price point, but with significant trade-offs in speed and intelligence.

GoogleOpen License32k ContextMulti-modal (Text, Image)Low CostSlow Speed

Gemma 3n E4B is a member of Google's Gemma family of open-weight models, designed to provide accessible and scalable AI for a wide range of developers. As a 3-billion parameter model, it occupies the smaller end of the spectrum, positioning it for tasks that do not require state-of-the-art reasoning or extensive world knowledge. Its primary appeal lies in a compelling combination of an open license, multi-modal capabilities, and an exceptionally low price point. However, this affordability comes with a clear and significant trade-off: Gemma 3n E4B is one of the slower models in its class, a factor that heavily influences its ideal use cases.

Our benchmark analysis, conducted via the Together.ai API, paints a clear picture of these trade-offs. On the Artificial Analysis Intelligence Index, Gemma 3n E4B scores a 15, placing it in the lower quartile of models tested and well below the class average of 20. This suggests limitations in handling complex, nuanced, or multi-step instructions. In stark contrast, its pricing is exceptionally competitive at just $0.02 per million input tokens and $0.04 per million output tokens. This makes it orders of magnitude cheaper than many proprietary models and highly affordable even among its open-weight peers. The total cost to run our entire intelligence benchmark on the model was a mere $1.10, highlighting its economic efficiency.

The most significant performance bottleneck is its speed. With a median output of just 43 tokens per second, it is substantially slower than the average model in its category, which typically performs at over 90 tokens per second. This sluggishness makes it a poor choice for any real-time, interactive application like a customer-facing chatbot. On the other hand, the model boasts several attractive features. It has a generous 32,000-token context window, allowing it to process large amounts of information in a single prompt. Furthermore, its ability to accept image inputs alongside text opens up a variety of use cases in vision-language tasks, a rare feature for a model at this price. It also demonstrates a tendency towards conciseness, generating fewer tokens on our benchmark than the average model, which can be a benefit for both cost and clarity.

Ultimately, Gemma 3n E4B is a specialized tool, not a general-purpose workhorse. It is not designed to compete with frontier models like GPT-4 Turbo or Claude 3 Opus. Instead, it carves out a niche for developers and organizations prioritizing cost above all else for non-time-sensitive tasks. It is best suited for asynchronous, background processes like batch data classification, first-pass content moderation, or simple document analysis where its slow speed is not a detriment and its low cost and multi-modal skills can be fully leveraged.

Scoreboard

Intelligence

15 (35 / 55)

Scores below the average of 20 on the Artificial Analysis Intelligence Index, indicating weaker performance on complex reasoning and instruction-following tasks.
Output speed

43 tokens/s

Notably slow, ranking #36 out of 55 models. The class average is more than double at 93 tokens/s.
Input price

$0.02 / 1M tokens

Very affordable, significantly cheaper than the class average of $0.10 for input tokens.
Output price

$0.04 / 1M tokens

Competitively priced for output, well below the class average of $0.20.
Verbosity signal

10M tokens

Relatively concise, generating fewer tokens on our intelligence benchmark than the average model (13M).
Provider latency

0.38 seconds

Time to first token is respectable, suggesting the model begins generating responses relatively quickly despite its slow overall output speed.

Technical specifications

Spec Details
Model Owner Google
License Open License
Context Window 32,000 tokens
Knowledge Cutoff July 2024
Input Modalities Text, Image
Output Modalities Text
Model Type Instruction-tuned Transformer
Parameters ~3 Billion
Benchmarked Provider Together.ai
Input Price $0.02 / 1M tokens
Output Price $0.04 / 1M tokens
Blended Price (3:1) $0.03 / 1M tokens

What stands out beyond the scoreboard

Where this model wins
  • Extreme Cost-Effectiveness: With input and output prices far below the market average, it's one of the most economical models available for large-scale processing.
  • Multi-modal Capability: The ability to process images alongside text is a powerful feature not commonly found in open-weight models in this price tier, enabling vision-language applications.
  • Generous Context Window: A 32k token context window is substantial for a model of this size, allowing it to analyze lengthy documents or maintain long conversation histories in a single pass.
  • Open and Permissive License: The open license provides flexibility for commercial use, modification, and deployment, reducing vendor lock-in and enabling custom solutions.
  • Helpful Conciseness: Its tendency to provide shorter, more direct answers can reduce output token costs and may be preferable in applications where brevity is valued.
Where costs sneak up
  • Slow Throughput: The extremely low token-per-second rate creates a poor user experience in interactive applications and can become a major bottleneck for high-volume, time-sensitive workloads.
  • Lower Intelligence: Its modest intelligence score means it may require more retries, more sophisticated prompt engineering, or a human-in-the-loop system to achieve reliable results, adding hidden operational costs.
  • Inefficient Real-time RAG: While the 32k context window is large, the slow generation speed makes it impractical for real-time Retrieval-Augmented Generation (RAG) where users expect fast answers from their documents.
  • Scalability Hurdles: An application built on this model may struggle to scale if user traffic grows, potentially forcing a costly and complex migration to a faster, more expensive model.
  • Higher Error Rate Potential: Lower reasoning ability can lead to more frequent factual inaccuracies or logical errors, necessitating additional validation layers or post-processing checks in production.

Provider pick

Our performance and pricing benchmarks for Gemma 3n E4B were conducted using the Together.ai API. Together.ai specializes in providing optimized access to a wide range of open-weight models, making it a natural choice for evaluating and deploying models like this one. While self-hosting is an option due to the model's open license, using a provider like Together.ai abstracts away the complexity of infrastructure management.

Priority Pick Why Tradeoff to accept
Lowest Price Together.ai Together.ai offers Gemma 3n E4B at its rock-bottom price of $0.02 per 1M input and $0.04 per 1M output tokens, making it the clear choice for cost-sensitive applications. The trade-off is the model's inherent performance; the low price reflects its raw capabilities without additional optimization layers that might increase cost.
Best Performance Together.ai The benchmarked speed of 43 tokens/s on Together.ai is the established performance baseline. While objectively slow, it represents a known quantity on an optimized inference stack. This speed is a significant bottleneck. Self-hosting on specialized hardware could potentially yield better performance but requires significant technical investment.
Ease of Access Together.ai The platform provides a simple, unified API endpoint for Gemma 3n E4B, consistent with dozens of other open models, drastically reducing development and integration time. You are reliant on the provider's uptime and infrastructure, sacrificing the full control that comes with self-hosting.

Note: Performance metrics are specific to the Together.ai platform at the time of testing. Speeds and availability may vary on other platforms or with self-hosted configurations. Pricing is subject to change by the provider.

Real workloads cost table

Gemma 3n E4B's unique profile of low cost, multi-modality, and slow speed makes it suitable for specific types of tasks. It excels where cost is the primary concern and immediate results are not required. The following examples illustrate practical scenarios where this model can provide significant value without being hampered by its limitations.

Scenario Input Output What it represents Estimated cost
Batch Image Tagging 1,000 tokens (prompt with instructions) + Image data 100 tokens (JSON array of descriptive tags) An asynchronous, non-critical background job where thousands of images are categorized overnight. Speed is irrelevant, but cost at scale is paramount. ~$0.000024 per image
First-Pass Content Moderation 300 tokens (user-generated comment) 10 tokens (e.g., 'SAFE', 'FLAG_HATE', 'FLAG_SPAM') A cheap, automated initial filter to catch obvious policy violations, escalating borderline cases to a more powerful model or human reviewer. ~$0.0000064 per comment
Internal Document Summarization 4,000 tokens (internal weekly report) 400 tokens (bullet-point summary) A non-urgent task for an internal tool where an employee can trigger a summary and wait a few seconds for the result. ~$0.000096 per summary
Data Extraction from Forms 500 tokens (prompt) + Scanned form image 150 tokens (JSON with extracted fields like 'name', 'date') Using vision capabilities to digitize structured data from images in a batch process where real-time performance is not needed. ~$0.000016 per form

The key takeaway is that Gemma 3n E4B is a cost-cutter's tool for the backend. It is most effective when deployed in asynchronous pipelines, batch processing jobs, or as a preliminary filter in a multi-step workflow. Its value diminishes rapidly as real-time interaction or high-level reasoning becomes a requirement.

How to control cost (a practical playbook)

While Gemma 3n E4B is already one of the cheapest models on the market, strategic implementation can further optimize your spend and ensure you're using the model effectively. The goal is to maximize its strengths (low cost, vision) while mitigating its weaknesses (slow speed, low intelligence). The following strategies provide a playbook for getting the most value out of Gemma 3n E4B.

Design Asynchronous Workflows

Given its slow output speed of ~43 tokens/s, never place Gemma 3n E4B in a request/response loop that a user is actively waiting on. Instead, build your application around asynchronous job queues.

  • A user submits a request (e.g., summarize a document).
  • The application adds the job to a queue and immediately returns a 'Processing' status to the user.
  • A background worker picks up the job, calls the Gemma 3n E4B API, and waits for the result.
  • Once complete, the result is stored, and the user is notified (e.g., via email, a web notification, or by updating the UI).

This pattern makes the model's slow speed invisible to the end-user and prevents your application from being blocked by long-running API calls.

Use as a Low-Cost 'Triage' Model

In a multi-model system, Gemma 3n E4B can serve as an inexpensive first-pass filter. It can handle the majority of simple, high-volume requests, escalating only the complex or ambiguous cases to a more capable (and expensive) model like Claude 3 Sonnet or GPT-4o.

  • Example: Customer Support Routing. Use Gemma 3n E4B to classify incoming support tickets into categories like 'Billing Inquiry', 'Technical Issue', or 'Sales Question'. It can handle the easy ones, but if its confidence is low or the query is complex, it can escalate to a more intelligent model for deeper analysis.
  • Example: Content Moderation. Use it to quickly flag obviously safe or highly toxic content, passing only the nuanced, borderline cases to a more expensive model or human moderator. This can reduce costs by 90% or more by minimizing calls to the premium model.
Leverage its Vision for Batch Processing

The model's ability to process images is a standout feature at its price point. Capitalize on this for offline, large-scale image analysis tasks where cost is the primary driver.

  • Digitize Archives: Process thousands of scanned documents or forms overnight to extract text and structured data.
  • Catalog Image Libraries: Generate descriptive tags, captions, or alt-text for a large library of images for improved searchability.
  • Simple Visual Inspection: In a manufacturing setting, analyze images from a production line to flag obvious defects in a non-real-time quality control check.

These tasks are often prohibitively expensive with higher-end multi-modal models, but become feasible with Gemma 3n E4B's pricing.

FAQ

What is Gemma 3n E4B?

Gemma 3n E4B is a small, 3-billion parameter open-weight language model developed by Google. It is part of the Gemma family, which are built from the same research and technology used to create the Gemini models. It is designed to be a lightweight, accessible model that is instruction-tuned and capable of processing both text and image inputs.

Is Gemma 3n E4B suitable for a real-time chatbot?

No, it is generally not recommended for real-time, user-facing chatbots. Its output speed of approximately 43 tokens per second is quite slow, which would result in a laggy and frustrating user experience as they wait for responses to be generated. It is better suited for applications where response time is not a critical factor.

What are the main advantages of using this model?

The primary advantages are:

  • Low Cost: It is exceptionally cheap, with prices around $0.02 for input and $0.04 for output per million tokens.
  • Multi-modality: It can analyze images, a feature not common in models this inexpensive.
  • Open License: It offers commercial-friendly terms, allowing for broad use and modification.
  • Large Context Window: The 32k token context window allows it to process large amounts of information at once.
What are the biggest drawbacks?

The main drawbacks are directly related to its performance:

  • Slow Speed: Its low tokens-per-second output makes it unsuitable for real-time applications.
  • Lower Intelligence: With an intelligence score of 15 on our index, it struggles with complex reasoning, nuance, and multi-step instructions compared to more capable models. This can lead to less reliable or accurate outputs.
How does it compare to other Gemma models?

Gemma 3n E4B is one of the smaller models in the Gemma family. Larger versions, such as Gemma 9B, offer significantly better performance on reasoning and knowledge-based tasks, but at a higher computational cost and price. The 3n E4B model is optimized for maximum efficiency and accessibility, targeting use cases where a smaller, more economical model is sufficient.

What does 'multi-modal' mean for Gemma 3n E4B?

For Gemma 3n E4B, 'multi-modal' means it can accept more than one type of input data in a single prompt. Specifically, it can process both text and images. You can provide it with an image and ask questions about it in text. However, its output is limited to text only; it cannot generate images.


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