# Flux + Gemini 4 Carbon (Preview) Try Gemini 4 Carbon in Flux, your AI hardware engineer, for deep device reviews across electronics and mechanics. Preview available through November 24, 2026. Written by [Flux](#) Published Nov 2026 - 4 min read ![Flux + Gemini 4 Carbon (Preview)](https://flux.seobdtools.com/p/assets/blogs/flux-gemini-4-carbon/v2/main.webp) ## Flux is your AI hardware engineer, and we added Gemini 4 Carbon to Copilot. An industrial inspection camera brings power, image processing, optics, and heat management into a constrained assembly. A change to one can require a review of the others. Bring your hardest, longest device tasks into Flux and ask for a multi-step review that connects the electronics to the mechanical design. ### Try It Now [![Copilot model menu with Gemini 4 Carbon selected in the Preview group](https://flux.seobdtools.com/p/assets/blogs/flux-gemini-4-carbon/v2/selector.webp)](https://flux.seobdtools.com/p/assets/blogs/flux-gemini-4-carbon/v2/selector.webp) Open any project in Flux and launch Copilot. Open the model menu in the composer, find the Preview group, and select “Gemini 4 Carbon”. The preview is available to all customers through November 24, 2026. Start with a review that spans several design decisions: > *“Review the inspection camera's power tree, image-sensor interfaces, and high-speed connections. Trace each requirement to the design, identify dependencies, and make a verification plan.”* > *“Review the camera's lens mount, board stack, heat path, and housing tolerances together. Plan the checks needed to keep optical alignment and service access consistent through assembly.”* [Try Gemini 4 Carbon in Flux now](https://flux.ai/) ### What’s New and Better Gemini 4 Carbon is an option in the Preview group. The model menu describes it as “Google's reasoning model. Two-week preview, ends November 24, 2026.” In its [November 10 announcement](https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-4-carbon-now-available/), Google describes Carbon as its strongest model, built for long-horizon agentic work, complex multi-step coding and debugging, and deep reasoning. Carbon uses more tokens than Argon to explore thoroughly and run extended verification loops. Argon remains the choice for most work. Choose Carbon when the task needs a deep review across connected requirements: - Trace electrical requirements through power, signal, and interface decisions. - Connect mechanical tolerances, thermal paths, and assembly constraints. - Work through dependencies in a multi-step design review. - Repeat verification checks after changes to the complete device. Flux has live context on your design, down to parts, pins, nets, properties, constraints, and stackups. Its automated workflows support stepwise actions, constraint-aware edits, and iterative design changes in your project. Bring the electronics and mechanical assembly into the same conversation. Share the device requirements and ask for a plan that carries them through each review and verification loop. ### Try It on a Real Design Use an industrial inspection camera as a device-level review task. Supply the sensor, processor, power-converter, and lens specifications, together with the mechanical drawings. Ask for a plan before requesting edits. > Review an industrial inspection camera with a 24 V DC input, an image-sensor board, a processing board, and a machined aluminum housing. Plan the checks for input protection, power sequencing, sensor clocks, and board-to-board signal integrity. Connect those checks to the lens-mount tolerance stack, board mounting, processor-to-housing heat path, connector access, and assembly sequence. Use the supplied datasheets, drawings, and operating requirements. Identify missing inputs, trace dependencies between electrical and mechanical decisions, and propose an ordered change plan. After each proposed change, state which calculations and fit checks must be repeated. [Try it Now](https://flux.seobdtools.com/signup?destinationPath=%2Fprojects%2Fcreate%3Fprompt%3DReview%2520an%2520industrial%2520inspection%2520camera%2520with%2520a%252024%2520V%2520DC%2520input%252C%2520an%2520image-sensor%2520board%252C%2520a%2520processing%2520board%252C%2520and%2520a%2520machined%2520aluminum%2520housing.%2520Plan%2520the%2520checks%2520for%2520input%2520protection%252C%2520power%2520sequencing%252C%2520sensor%2520clocks%252C%2520and%2520board-to-board%2520signal%2520integrity.%2520Connect%2520those%2520checks%2520to%2520the%2520lens-mount%2520tolerance%2520stack%252C%2520board%2520mounting%252C%2520processor-to-housing%2520heat%2520path%252C%2520connector%2520access%252C%2520and%2520assembly%2520sequence.%2520Use%2520the%2520supplied%2520datasheets%252C%2520drawings%252C%2520and%2520operating%2520requirements.%2520Identify%2520missing%2520inputs%252C%2520trace%2520dependencies%2520between%2520electrical%2520and%2520mechanical%2520decisions%252C%2520and%2520propose%2520an%2520ordered%2520change%2520plan.%2520After%2520each%2520proposed%2520change%252C%2520state%2520which%2520calculations%2520and%2520fit%2520checks%2520must%2520be%2520repeated.) Continue from the review to the complete assembly. Ask for a verification loop that checks the power and sensor interfaces alongside optical alignment, thermal contact, and housing fit. Carry each change back to the requirements that it affects. ### Getting the most from Gemini 4 Carbon in Flux - **Define the review.** Supply the operating conditions, interface requirements, mechanical drawings, and acceptance criteria. - **Expose dependencies.** Ask which electrical decisions affect thermal paths, mounting, and alignment, and which mechanical changes affect the electronics. - **Plan verification loops.** Specify the calculations and assembly checks that must be repeated after a change. - **Plan before you act.** Review the ordered change plan against the complete device requirements before requesting edits. ### Switch Models Any Time Flux is model agnostic. Copilot gives you the latest models from every major AI lab in one model menu, so you are never locked in to one lab. Switching is easy. Open the model menu in the composer and select a different model. Your next message uses it, in the same conversation, with the same project context. Use Gemini 4 Carbon for one task, then compare it with a different model on the next task. Or let Flux select the model for you. [Adaptive](https://flux.seobdtools.com/p/blog/adaptive-agent-model) gives each task to the model that does that task best for the price. Hard design decisions go to frontier models, and routine work goes to fast, low-cost models. You get frontier intelligence for less: Adaptive is a big part of why [Flux is now about 70% cheaper to use](https://flux.seobdtools.com/p/blog/ai-hardware-design-more-work-per-credit). Adaptive is the default choice. ### What’s Next Use the preview for a device task that needs sustained reasoning across electronics and mechanics. Start with one review, then carry its findings through the next verification loop: - Resolve the power-sequencing and image-sensor interface decisions. - Check the lens alignment, heat path, and housing tolerance stack. - Update the assembly plan as electrical and mechanical decisions change. - Review the complete device against the acceptance criteria with your engineering team. Open Flux and select “Gemini 4 Carbon” from the Preview group in the composer model menu. The preview is available through November 24, 2026. Bring the design question that needs a deeper review, and keep its electrical and mechanical requirements in the same project. [Try Gemini 4 Carbon in Flux now](https://flux.ai/) Let’s start building Build your big idea together with Flux. All you need to do is describe what you want to make, or what problem you want to solve. Flux will work with you to make it a reality. ![Close-up photo of a PCB made with Flux, with an ESP32 module, buttons, and a microSD slot.](https://flux.seobdtools.com/p/assets/blogs/miscellaneous/sidebar-cta-pcb.webp) [Try it Free](https://flux.seobdtools.com/signup) ## More in AI & Prompt Engineering for Hardware [ ![What Makes a Perfect PCB Design Prompt](https://flux.seobdtools.com/p/assets/blogs/how-to-write-a-perfect-pcb-design-prompt/main.webp) ### What Makes a Perfect PCB Design Prompt 8 Min Read](https://flux.seobdtools.com/p/blog/what-makes-a-perfect-pcb-design-prompt)[ ![Flux, an AI hardware engineer pointing out the dos and don'ts when prompting.](https://flux.seobdtools.com/p/assets/blogs/prompting-guide/main.webp) ### Prompting Guide: Working with Flux from Idea to Schematic 9 Min Read](https://flux.seobdtools.com/p/blog/prompting-guide-working-with-flux-from-idea-to-schematic)[ ![A space-themed image with a central cartoon astronaut helmet against a backdrop of stars and nebulae in shades of purple. 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Let’s build your idea together. All you need to do is describe what you want to make, or what problem you want to solve. Flux will work with you to make it a reality. [Try it Free](https://flux.seobdtools.com/signup) ![Close-up of a Flux-designed printed circuit board](https://flux.seobdtools.com/p/assets/homepage-v2/mission-visual.webp)