Cerebras SystemsActive
Current flagship wafer-scale processor inside CS-4. Same 4 trillion transistors, 900,000 cores, 46,225 mm2, and 44 GB of SRAM as WSE-3, clocked and packaged for roughly 2x the speed of the prior wafer, 250 PFLOPs of AI compute, and 43.2 PB/s of memory bandwidth per wafer. Redundant cores and fail-in-place routing are how Cerebras yields a dinner-plate-sized die.
Latest update Sep 18, 2026
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Announced with CS-4 on August 18, 2026. Ships as the compute element of CS-4; WSE-3 (non-Turbo) remains in CS-3 production. Fabbed at TSMC without HBM, CoWoS, or 3nm.
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Rack-scale AI system on the new Cerebras Nexus platform, built from three WSE-3 Turbo processors in modular liquid-cooled compute backpacks. Cerebras says CS-4 delivers up to 30x faster inference than GPU systems, up to 10x more throughput per watt than CS-3, 750 PFLOPs of AI compute, 7.2 Tbps of I/O, 129.6 PB/s of memory bandwidth, and wafer-to-wafer latency as low as 2 microseconds for models above 50 trillion parameters.
Current production wafer-scale system, one WSE-3 per chassis, used for Cerebras Cloud, OpenAI Ultrafast, AWS disaggregated decode, and on-prem clusters. The 5nm WSE-3 is 46,225 mm2 with 4 trillion transistors, 900,000 AI cores, 44 GB of on-chip SRAM, and 21 PB/s of memory bandwidth, about 58 times the area of an Nvidia B200 die and thousands of times its on-chip memory bandwidth.
Cerebras-operated cloud that serves open and dedicated models through an OpenAI-compatible API, plus a training cloud for fine-tunes and from-scratch runs. Production customers include OpenAI (GPT-5.6 Sol Ultrafast), Meta's Llama API, Mistral, Perplexity, Cognition, Lovable, CrowdStrike, AlphaSense, GSK, Block, and Figma. Partner distribution includes AWS Marketplace, OpenRouter, Hugging Face, Vercel, and IBM watsonx.
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SpaceX
Partially reusable two-stage medium-lift launch vehicle. The world's most frequently launched orbital rocket.
SpaceX
Heavy-lift launch vehicle consisting of a strengthened Falcon 9 core with two additional boosters.
SpaceX
Reusable spacecraft for cargo and crew transport to the International Space Station.
SpaceX
Fully reusable super-heavy-lift launch system designed for missions to the Moon, Mars, and beyond. V3 (Block 3) variant with Raptor 3 engines is the production version.