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Prompt Octopus

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Assistant · Vendor site 2026-10-04

Prompt Octopus is a VS Code extension for side-by-side prompt engineering across 40+ LLMs. Developers highlight a prompt in code, pick models, compare responses, and optionally route calls through Prompt Octopus servers or their own API keys stored locally.

Updated 2026-10-04View sources
Official website
Category
Assistant
Free access
Bring-your-own API keys allow free unlimited usage; the site offers 10 free comparisons without keys or payment.
API access
Users can enter their own provider API keys locally; paid server routing is a separate upgrade.

Is Prompt Octopus right for you?

A good fit for

Software engineers evaluating prompts and model outputs directly inside VS Code.

Before you choose

Free trial covers the first 10 comparisons without keys; server-hosted routing requires a paid upgrade.

In-editor LLM evals

Prompt Octopus targets engineers who want multi-model prompt comparisons without leaving VS Code.

What it can do

Features & capabilities

Unknown is different from unavailable. Each fact carries its own evidence.

CapabilityValueEvidenceChecked
VS Code workflowHomepage instructs users to highlight prompts in code and compare model responses in the editor.Facts sourced2026-10-04
40+ modelsMarketing lists OpenAI, Anthropic, DeepSeek, Mistral, Grok, and dozens of other providers.Facts sourced2026-10-04
Local API keysCopy states BYO API keys are stored locally and never seen by Prompt Octopus servers.Facts sourced2026-10-04

Understand the total cost

Prompt Octopus pricing & plans

Prompt Octopus Servers

$10.00 /mo

Billed monthly for server-hosted comparisons.

Server routing
Upgrade enables Prompt Octopus Servers instead of only local API keys.
Explore pricing & history

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The practical questions

Frequently asked questions

What is Prompt Octopus used for?

Prompt Octopus is a VS Code extension for side-by-side prompt engineering across 40+ LLMs. Developers highlight a prompt in code, pick models, compare responses, and optionally route calls through Prompt Octopus servers or their own API keys stored locally.

Does Prompt Octopus have a free plan?

Bring-your-own API keys allow free unlimited usage; the site offers 10 free comparisons without keys or payment.. This record does not confirm an ongoing free plan.

How much does Prompt Octopus cost?

The listed monthly price is $10.00 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.

Can I use Prompt Octopus through an API?

Users can enter their own provider API keys locally; paid server routing is a separate upgrade.. API access and subscription access may have different terms; consult the linked sources.

What should I check before choosing it?

Free trial covers the first 10 comparisons without keys; server-hosted routing requires a paid upgrade.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Facts apply to the named version and check date. Send a sourced correction if something changed.