Tesla Rolls Out FSD v14.3.4 With Cybertruck Summon and Upgraded Neural Network
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Tesla started rolling out software version 2026.14.6.10 on June 13, 2026, carrying FSD (Supervised) v14.3.4 — the most significant update since the spring 14.6 branch launched in May. As of the initial push, roughly 0.1% of the tracked HW4 fleet has installed the update, putting the total count at around 41 vehicles in early telemetry. Full fleet rollout is expected over the coming days.
Elon Musk confirmed the rollout on X, calling out the Cybertruck Summon addition specifically. For Cybertruck owners, this marks the first time Actually Smart Summon (ASS) has been available on the truck — the feature now operates at a maximum speed of 8 mph, matching the cap on other HW4 vehicles. Early owners posting on social media described the truck navigating tight parking structures autonomously on the first try.
A Unified Brain for Summon, FSD, and Robotaxi
The headline engineering change in v14.3.4 is the unification of the model used by Actually Smart Summon, FSD, and the Robotaxi stack. Previously these three modes ran on separate or partially forked neural network branches. Merging them into one means improvements made for Robotaxi — which trains on the hardest unsupervised edge cases — now flow directly into consumer FSD and Summon.
Tesla’s release notes describe the core changes:
“Upgraded the Reinforcement Learning stage of training the FSD neural network, resulting in improvements in a wide variety of driving scenarios. Upgraded the neural network vision encoder, improving understanding in rare and low-visibility scenarios, strengthening 3D geometry understanding, and expanding traffic sign understanding.”
The RL upgrade is notable because it draws on hard examples sourced from the live fleet — scenarios where drivers previously intervened — and uses them as training signal. The vision encoder change expands the range of traffic signs the system can reliably interpret, an important step toward global deployment.
What’s Actually Different for Drivers
| Improvement | What Changed | Source |
|---|---|---|
| Traffic light handling | Better at compound lights, curved approaches, yellow-light stopping | Official release notes |
| Small animal detection | RL-trained on rare fleet events involving animals in path | Official release notes |
| Emergency vehicle response | Improved pull-over behavior and school bus stop handling | Official release notes |
| System degradation recovery | Auto-recovers from temporary drops without driver input, reducing disengagements | Official release notes |
| Rare obstacle handling | Better at objects extending or hanging into the lane | Official release notes |
| Parking spot selection | More decisive slot targeting in lots with multiple options | Community early testers |
Cybertruck Gets Its First Summon Feature
Cybertruck owners have waited since the truck’s November 2023 launch for Summon support. The delay stemmed from the Cybertruck shipping with a different camera and compute layout compared to the sedan/SUV lineup, requiring a separate integration path. With v14.3.4 and the unified model architecture, Tesla appears to have resolved that gap.
In addition to ASS, the update also delivers Dumb Summon for Cybertruck — the older, simpler version that moves the vehicle forward or backward in a straight line. Both features require the owner to remain in proximity and keep a finger on the app.
The update also brings a small but popular UI addition: celebratory confetti screens when a driver hits an FSD streak milestone (consecutive miles without a disengagement). Tesla introduced public streak tracking in early 2026, and the visual reward mechanic has driven competitive sharing on owner forums.
Under the Hood: Chromium 140 and Grok Upgrades
Beyond FSD, 2026.14.6.10 includes several secondary improvements documented by the community:
- Chromium browser upgraded to version 140, the latest stable release
- Grok assistant auto-dismisses after 15 seconds of inactivity
- Grok can now access the driver’s saved location favorites
- Parking options now display directly on destination maps in the navigation UI
- Amber brake light visualization improvements on the driver display
- Track Mode is now restricted when parental controls are enabled
- Animated badges in the Software menu section
The Bottom Line for FSD Subscribers
FSD v14.3.4 lands as the clearest signal yet that Tesla’s three-stack autonomy strategy — consumer FSD, fleet Robotaxi, and Summon — is converging on a single shared model. The unified architecture is what makes scaling the Robotaxi program meaningful: every hard mile logged by the Austin and Phoenix fleets now trains the same network that subscribers use every day. The initial 0.1% push is small, but the architecture shift underneath is not.
Cybertruck owners specifically get a long-overdue feature unlock. Whether the 8 mph speed cap and narrow parking lot coverage satisfies expectations for a truck with a bed full of gear remains to be seen in early owner reviews this week.
Photo: Tesla touchscreen / FSD visualization / Pexels