Amazon Bedrock vs Cerebras

Cerebras is the fastest public inference host, on a wafer-scale chip with a tiny self-serve catalog. Bedrock is a broad, governed model service on AWS. Raw speed versus coverage.

By The Subconscious Team · Updated September 30, 2026

Amazon Bedrock vs Cerebras: key differences

Cerebras sells speed. Its developer table lists GPT-OSS 120B near 3,000 tokens per second, about six times Groq on the same weights, at $0.35 in and $0.75 out per million. The shared catalog is just GPT-OSS 120B and Gemma 4 31B, with other families on dedicated endpoints and through partners including AWS Marketplace. Bedrock sells coverage: 100+ models from 18+ providers, closed and open, all under IAM, PrivateLink, KMS and CloudTrail, with fine-tuning and a managed agent platform. Cerebras even lists AWS Marketplace as one of its channels.

They seldom compete for the same request. Cerebras fits voice, live code autocomplete and streaming UIs where generation is the wait, and agent steps that emit long outputs. Its speed does little when an agent mostly waits on tools or hidden reasoning, and most models mean a sales conversation. Bedrock fits the governed backbone of an enterprise agent, with Claude and GPT for hard steps and cheap Nova models for simple ones. Its catch is pricing, with most models 20 to 35% above direct APIs.

What Amazon Bedrock and Cerebras do

Amazon Bedrock

Amazon Bedrock is AWS's managed model service and has become the default AI control plane for many enterprises. One API reaches 100+ models from 18+ providers, including Anthropic's Claude family, Meta, Mistral, DeepSeek, Amazon's own Nova models, and, since an April 2026 partnership expansion, OpenAI models up to GPT-6 Astra. Switching models is usually just a new model ID. Every call inherits IAM, PrivateLink, KMS encryption and CloudTrail logging, and provider models never train on customer data.

Example models: Claude Opus, GPT-6 Astra

Full Amazon Bedrock profile

Cerebras

Cerebras builds a single chip the size of a silicon wafer, and its inference cloud is the fastest public host on the models it serves. Its developer table lists GPT-OSS 120B near 3,000 tokens per second, about six times Groq on the same weights, at $0.35 in and $0.75 out per million. The public shared catalog is thin, just GPT-OSS 120B and Gemma 4 31B as of August 2026. More model families live on dedicated endpoints and through partners like OpenRouter, Hugging Face, Vercel and AWS Marketplace.

Example models: GPT-OSS 120B, Gemma 4 31B

Full Cerebras profile

Should you choose Amazon Bedrock or Cerebras?

Amazon Bedrock

Choose Amazon Bedrock for

A broad, governed catalog for enterprise agents.
Claude and GPT alongside cheap Nova models.
Provisioned throughput at 20 to 40% off.

Cerebras

Choose Cerebras for

The highest tokens per second on open models.
Streaming UIs and live code autocomplete.
Agent steps that emit long outputs.

Amazon Bedrock vs Cerebras at a glance

Attribute	Amazon Bedrock	Cerebras
Model access	Closed and open, 100+ models	Open weights
Flagship models	Claude, GPT-6 Astra, Nova, DeepSeek	GPT-OSS 120B, Gemma 4 31B
Speed	Latency-optimized option on some models	~3,000 tok/s on GPT-OSS 120B
Price	~20–35% above direct; Claude at parity	$0.35 in, $0.75 out (GPT-OSS 120B)
Customization	Fine-tuning, Custom Model Import	Unknown
Deployment	Managed on AWS, AgentCore	Shared API, dedicated, partners
Long context	Varies by model	Unknown

Frequently asked questions

What is the difference between Amazon Bedrock and Cerebras?

Cerebras is the fastest public inference host, on a wafer-scale chip with a tiny self-serve catalog. Bedrock is a broad, governed model service on AWS. Raw speed versus coverage.

When should I choose Amazon Bedrock over Cerebras?

A broad, governed catalog for enterprise agents; Claude and GPT alongside cheap Nova models; Provisioned throughput at 20 to 40% off.

When should I choose Cerebras over Amazon Bedrock?

The highest tokens per second on open models; Streaming UIs and live code autocomplete; Agent steps that emit long outputs.

Is Amazon Bedrock or Cerebras cheaper?

Amazon Bedrock: ~20–35% above direct; Claude at parity. Cerebras: $0.35 in, $0.75 out (GPT-OSS 120B). The cheaper choice depends on the model and workload.

Related comparisons

Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious. Our inference stack treats a long-horizon trace as the primary workload, so speed, cost, and accuracy hold up deep into the trace.

Subconscious vs Amazon Bedrock Subconscious vs Cerebras