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Thinkers

Content-grounded reactions from three public tech voices. Paste text or attach files; each agent replies in that thinker’s style at the length you choose.

Model provider

Gemini Flash (gemini-flash-latest): No paid key required for Google’s free tier. Add a Gemini API key from Google AI Studio (free). Usage beyond free limits may require billing.

How to get started

1. Why you need a key

This demo does not bill the site owner for model usage. Each visitor brings their own provider key so reactions run on your free tier or paid account — not ours.

2. Pick a model

Gemini Flash is recommended to start (free-tier key). Use the toggle above to choose which model runs reactions. Setup for every provider is below.

3. Add your keys

Save credentials for any providers you want to use. Only the key for the model selected above is sent with each reaction.

Gemini Flash

Free-tier key

You bring your own Gemini key so model usage is billed to your Google free tier (or your Google Cloud billing), not the site owner.

  1. Open Google AI Studio’s API key page (link below).
  2. Sign in with a Google account.
  3. Click “Create API key”, choose a project if asked, and copy the key.
  4. Paste it into the Gemini API key field below and click Save.
  5. Select Gemini Flash under Model provider above, then try a reaction.

Open Gemini Flash signup / key page →

API keys for Gemini Flash

No key saved yet for this provider

Claude Sonnet

Paid key required

You bring your own Anthropic key so Claude usage is charged to your Anthropic account, not the site owner.

  1. Open the Anthropic Console (link below) and create an account if you don’t have one.
  2. Add billing or credits in Settings → Billing (required — Claude has no free API tier).
  3. Open API Keys in the left sidebar and click “Create Key”.
  4. Copy the key immediately (it is only shown once).
  5. Paste it into the Anthropic API key field below and click Save.
  6. Select Claude Sonnet under Model provider above, then try a reaction.

Open Claude Sonnet signup / key page →

API keys for Claude Sonnet

No key saved yet for this provider

Workers AI (Llama)

Free-tier allotment

You bring your own Cloudflare credentials so Workers AI usage draws from your free allotment (then your Cloudflare billing), not the site owner’s.

  1. Create or sign in to a free Cloudflare account at dash.cloudflare.com.
  2. On any account overview page, copy Account ID from the right sidebar.
  3. Open API Tokens (link below).
  4. Create a token with Workers AI Read/Run permissions (use a Workers AI template if available, or custom token with Account → Workers AI → Edit).
  5. Paste both the Account ID and API token into the fields below and click Save.
  6. Select Workers AI (Llama) under Model provider above, then try a reaction.

Open Workers AI (Llama) signup / key page →

API keys for Workers AI (Llama)

No key saved yet for this provider

4. Privacy

Keys stay in this browser’s local storage. They are sent only to this site’s reaction API so it can call the model for your request, and are not stored on the server.

Packy McCormick

Writer of Not Boring — power laws, startups, and the business of technology.

Images, PDF, PPTX, DOCX, text
Response length

Ben Thompson

Author of Stratechery — Aggregation Theory, platforms, and tech strategy.

Images, PDF, PPTX, DOCX, text
Response length

Benedict Evans

Independent analyst — mobile, media, cars, and AI as industry transitions.

Images, PDF, PPTX, DOCX, text
Response length

Simulated personas grounded in curated public frameworks — not the real authors, and not paywalled newsletter text. Bring your own API key; usage is charged to you (or stays within your free tier).

  • Gemini Flash — Free-tier key: Best free starting point for this demo — strong multimodal support and solid long-form reactions without a paid key. No paid key required for Google’s free tier. Add a Gemini API key from Google AI Studio (free). Usage beyond free limits may require billing.
  • Claude Sonnet — Paid key required: Best voice fidelity for Packy / Ben / Benedict essay-style takes when you want the highest-quality persona writing and are willing to pay. Requires a paid Anthropic API key. Usage is billed per token — there is no free Anthropic API tier for this model.
  • Workers AI (Llama) — Free-tier allotment: Good Cloudflare-native free allotment option if you already use Cloudflare. Expect a weaker essayist voice than Claude or Gemini. No paid LLM key required within Cloudflare’s free Workers AI allotment. Needs a Cloudflare Account ID + API token (free account OK). Heavy use beyond the free allotment is billed by Cloudflare.