Cerebras SystemsActive
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.
Latest update Sep 18, 2026
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In volume production. Flex is expanding Milpitas lines for an expected ~7x CS-3 output increase through 2026; Sanmina and Rocket EMS are also adding lines. Still the workhorse for OpenAI, AWS, and the inference cloud while CS-4 ramps.
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Announced next steps from Cerebras Systems that mention CS-3.
Q1 2027
AWS is deploying CS-3 for decode next to Trainium prefill, connected by EFA. Management is guiding general availability on Bedrock to Q1 2027, with first hyperscale revenue later in 2027. That AWS volume is not in the $25.4 billion RPO figure, so a signed, revenue-bearing Bedrock launch would be incremental.
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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 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.
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.