# 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.

Canonical: https://www.subconscious.dev/compare/aws-bedrock-vs-cerebras · By The Subconscious Team · Updated September 30, 2026

## How they compare

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 each one does

### 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.

### 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.

## Which is best, and when

### 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.

### Choose Cerebras for

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

## 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 | - |
| Deployment | Managed on AWS, AgentCore | Shared API, dedicated, partners |
| Long context | Varies by model | - |

## FAQ

### 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.

## Running long-horizon agents?

If your agents run past 200K tokens, compare both against Subconscious: [Subconscious vs Amazon Bedrock](https://www.subconscious.dev/compare/subconscious-vs-aws-bedrock.md), [Subconscious vs Cerebras](https://www.subconscious.dev/compare/subconscious-vs-cerebras.md).

Full profiles: [Amazon Bedrock](https://www.subconscious.dev/providers/aws-bedrock.md), [Cerebras](https://www.subconscious.dev/providers/cerebras.md).