Google · Official-source model record
medgemma 4b it
medgemma · Version google/medgemma-4b-it
Publisher-sourced inventory. Specifications come from official documentation and model cards. “Not documented” means we have no verified value. This inventory is separate from our editorial reviews.
Coverage & sources ↗Current catalog answers
What to know about medgemma 4b it
AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026.
Which medgemma 4b it does this page describe?
medgemma 4b it is a model record from Google in the medgemma family. Source
The recorded model identifier or checkpoint is google/medgemma-4b-it. Use that exact identifier when checking documentation or a provider listing. Source
How can you access medgemma 4b it?
The catalog documents Open weights access for medgemma 4b it. Source
As of the catalog check, this version was listed as available. Source
Open weights means the model weights are distributed for use under their stated terms. It does not establish a hosted API, an open-source license, or a hardware requirement.
What are medgemma 4b it's context and output limits?
The publisher reports the context window as At least 128K tokens. Source We retain the publisher's notation and qualifiers; no exact token count or hosted serving allowance is inferred from it.
The documented maximum output is 8,192 tokens. Source
Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity.
What dates are documented for medgemma 4b it?
Release date: May 20, 2025. Source This is a release milestone, not a knowledge or training cutoff. The source labels this “MedGemma 4B IT initial release.”
Neither a knowledge cutoff nor a training-data cutoff is established here. A release date, repository upload or filename cannot supply those missing dates.
What can medgemma 4b it receive and generate?
Documented inputs: Text and Image. Source
Documented outputs: Text. Source
Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation.
What license is recorded for medgemma 4b it?
The recorded license label is other. Source
Read the linked license and associated use terms for this exact version before redistribution, commercial deployment or fine-tuning. A label alone does not establish every permission, restriction or obligation, and it does not determine the terms of a separate hosted service.
What distinguishes medgemma 4b it?
These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results.
- Medical specialization
- Gemma 3-derived model adapted for medical text and image comprehension. Source
- Context lower bound
- The publisher states support for at least 128K tokens; this is a lower bound, not a verified maximum. Source
- Model creation date
- Publisher’s model creation date: July 9, 2025. This is not treated as a public release date. Source
- Validation requirement
- Outputs require independent verification and application-specific validation before use. Source
- Multimodal vocabulary fix
- A July 9, 2025 update restored the end-of-image token to correct degraded image-and-text performance; text-only behavior was unaffected. Source
What is documented about the medgemma 4b it checkpoint?
This evidence refers to google/medgemma-4b-it at recorded revision 290cda5eeccbee130f987c4ad74a59ae6f196408, checked October 23, 2026. Repository metadata
Safetensors metadata records 4,300,079,472 stored parameters. This is a stored-weight count, not necessarily the number activated per token, a download size or a GPU-memory requirement. Repository metadata
Recorded architecture class: Gemma3ForConditionalGeneration. Repository metadata
Repository task tag: image-text-to-text. A task tag identifies a distribution category; it does not measure performance on that task. Repository metadata
Listed library: transformers. Check that library's version and model support before loading the weights. Repository metadata
Repository access gate: auto. This records the repository's gate setting when checked; licensing and use terms still apply. Repository metadata
Read the retrieved model card for setup and qualifications. Model card
Keep the exact version in view
Other medgemma models from Google.
These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses.
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The documented record
Specifications, with their sources.
A missing value remains unknown. Input limits, output limits and the total context window are separate measurements.
- Publisher
- GoogleSource ↗
- Family
- medgemmaSource ↗
- Version
- google/medgemma-4b-itSource ↗
- Availability
- AvailableSource ↗
- Access
- Open weightsSource ↗
- Inputs
- Text · ImageSource ↗
- Outputs
- TextSource ↗
- Context window
- At least 128K tokensSource ↗
- Maximum input
- Not documented
- Maximum output
- 8,192 tokensSource ↗
- Knowledge cutoff
- Not documented
- Training-data cutoff
- Not documented
- Training completed
- Not documented
- Release date
- May 20, 2025MedGemma 4B IT initial release · day precisionSource ↗
- License
- otherSource ↗
- Input price / 1M tokens
- Not documented
- Output price / 1M tokens
- Not documented
Read this with the numbers.
Official Google-published checkpoint. Base/pretrained and instruction-tuned variants remain distinct; platform and quantized packaging copies are excluded. Hosted API availability not inferred. Publisher repository evidence (2026-10-23): Publisher task label: image-text-to-text. Published architecture metadata: Gemma3ForConditionalGeneration. Repository library label: transformers. Published safetensors metadata counts 4,300,079,472 stored parameters; this is not an active-parameter count for mixture-of-experts models. Repository access metadata is auto; access gating does not establish license permissions.
Model identifiers and aliases 0
No additional identifier has been verified.
Follow the evidence
Official sources.
- medgemma 4b it official reference ↗huggingface.co
- medgemma 4b it: official publisher repository metadata ↗huggingface.co
- google/medgemma-4b-it: publisher model card at pinned revision ↗huggingface.co
- MedGemma 1 — official model card and per-variant release notes ↗developers.google.com