Cerebras via VerticalAPI

Updated May 04, 2026·By VerticalAPI Team

Cerebras CS-3 wafer-scale inference (Llama 3.3, Llama 4) via VerticalAPI's OpenAI-compatible endpoint. BYOK with your Cerebras key, zero markup, ~2000 tok/s typical.

Start free with your Cerebras key → Read the docs

Endpoint: https://api.verticalapi.com/v1/chat/completions · BYOK header: X-Provider-Key: csk-...

Supported models

Cerebras models routed by VerticalAPI

Pass the model ID below as model in any OpenAI-compatible request. New Cerebras models are typically supported within 24h of release.

Model ID	Name	Context	Pricing (provider)
`llama3.3-70b`	Llama 3.3 70B (Cerebras)	128K	$0.85 / $1.20 per 1M tok
`llama-4-scout`	Llama 4 Scout (Cerebras)	10M	Preview pricing — host-dependent
`llama3.1-8b`	Llama 3.1 8B (Cerebras)	128K	$0.10 / $0.10 per 1M tok

Pricing reflects Cerebras's rates — you pay Cerebras directly. VerticalAPI adds zero markup on tokens.

Quickstart

5-line Cerebras call via VerticalAPI

Drop-in replacement for the OpenAI SDK. Works with the OpenAI Python client, Node, Go, curl — anything that speaks HTTP.

                cerebras_quickstart.py
                Python
            
from openai import OpenAI

client = OpenAI(
    base_url="https://api.verticalapi.com/v1",
    api_key="vapi_...",
    default_headers={"X-Provider-Key": "csk-..."}
)

response = client.chat.completions.create(
    model="llama3.3-70b",  # Cerebras
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Why use Cerebras via VerticalAPI

Four reasons developers route Cerebras through us

Zero token markup

You pay Cerebras directly with your own key. VerticalAPI's revenue is the gateway subscription, not a tax on your tokens.

One key, every provider

Cerebras alongside OpenAI, Anthropic, Gemini and 12 more — same OpenAI-compatible endpoint, same SDK, switchable per-request.

Latency & cost monitoring

Per-request token counts, p50/p95 latency and cost dashboards out of the box. Compare Cerebras to other providers on identical prompts.

Observability built in

Every Cerebras call gets a trace ID, replayable payload and audit log entry. Wire to Datadog or Sentry via OpenTelemetry.

Best for

Where Cerebras shines

fastest first-token (~70ms) real-time voice agents interactive UX code completion

FAQ

Common questions about Cerebras on VerticalAPI

How fast is Cerebras vs Groq?

Cerebras typically delivers 2-3x more tokens/sec than Groq on Llama 3.3 70B (~2000 tok/s vs ~500 tok/s). Time-to-first-token is similarly faster.

Is Cerebras production-ready?

Cerebras' inference cloud has been GA since 2024. VerticalAPI surfaces per-request latency so you can verify SLA against your own traffic patterns.

Switch providers

All supported LLM providers

Same endpoint, same SDK — just change the model and the BYOK header.

Ship on Cerebras in 60 seconds

Free tier — bring your own Cerebras key, zero markup, OpenAI-compatible endpoint.

Get your VerticalAPI key →