Google caught plenty of people off guard by launching the Pixel 10a with the older Tensor G4 instead of the newer Tensor G5. In a smartphone market where brands typically push the latest processor across an entire generation (with flagships getting the best version and cheaper models receiving a trimmed or “binned” variant), skipping the newest chip can seem like a step backward.
But the numbers suggest Google’s decision is less about cutting corners and more about choosing the most cost-efficient path while avoiding potential headaches tied to a newer platform.
Why the Pixel 10a uses the Tensor G4: it’s all about cost efficiency
A key clue comes from earlier bill of materials estimates tied to Google’s recent Pixel hardware. In mid-2025, a breakdown indicated the Tensor G4 represented 29.87 percent of the Pixel 9a’s overall component cost. While the full Pixel 9a bill of materials estimate itself isn’t publicly available, the percentage offers a useful window into how expensive the chipset is relative to the rest of the phone.
To frame the math, consider an estimated bill of materials of roughly $400 for a premium Pixel model that sold for $999, implying about a 40 percent margin. Budget-oriented phones like the Pixel “a” series generally run on slimmer margins than the Pro models. Still, if you use $400 as a rough comparison point for the sake of establishing an upper bound, then a 29.87 percent share would put the Tensor G4 at around $119 per device in a worst-case scenario.
That’s not the most important part, though.
The real savings: Google already paid the big Tensor G4 bills
A major portion of a custom chip’s cost isn’t the physical silicon that goes into each phone. It’s the upfront investment: research and development, design, and photomasks. Those costs are enormous, but they’re also largely one-time expenses that get spread across multiple devices.
Because the Tensor G4 has already been produced and shipped in volume through the Pixel 9 lineup, Google has effectively absorbed much of that upfront cost already. That dramatically changes the economics for the Pixel 10a.
Instead of needing to “pay off” the full development of the Tensor G4 again, the Pixel 10a mainly has to cover the marginal costs—things like wafer production and packaging. Estimates suggest those marginal costs could be as low as roughly $4 to $10 per unit for the chip, depending on the binning and production details.
That is a massive difference compared to the perception that reusing an older chip means paying “almost the same” as before. In reality, once a chip is established and its development costs are recouped, it can become far cheaper to deploy in a value-focused phone—exactly what the Pixel 10a is meant to be.
Avoiding Tensor G5 risks could be another smart move
Cost isn’t the only factor. The newer Tensor G5 reportedly had challenges of its own, particularly around throttling behavior and GPU driver stability, even if later updates helped improve the situation. For a phone designed to hit a more aggressive price point and appeal to mainstream buyers, choosing a known quantity like the Tensor G4 can reduce risk, simplify optimization, and potentially deliver a more stable day-to-day experience.
What this means for Pixel 10a buyers
For shoppers comparing Pixel phones in 2026, the Tensor G4 choice isn’t automatically bad news. It may help Google keep the Pixel 10a competitively priced while maintaining solid performance and predictable thermals. And because chip costs strongly influence overall pricing flexibility, reusing an established processor could free up budget for meaningful upgrades elsewhere—such as display improvements, durability enhancements, or camera tweaks—without pushing the retail price too high.
In other words, the Pixel 10a’s Tensor G4 decision looks less like a compromise and more like strategy: lower per-unit costs, reduced platform risk, and more room to build a compelling midrange Pixel that can compete on value.
