Otterly.AI vs PromptSignal (2026): which should you pick?

Pick Otterly.AI if

• Fits if a daily read on ChatGPT, Perplexity, AI Overviews and Copilot is what you need
• Works for agencies that brand client reports through Looker Studio, from Standard

Look elsewhere if

• Skip it if Gemini, AI Mode or Claude matter to you, as they're paid add-ons on every plan, and all seven engines add $227 a month on Standard
• Not for you if you need white-label reports, as there aren't any
• Tight if you start on Lite, with 15 prompts, one workspace, no API or MCP, and no extra prompt packs
• Pricey if you outgrow Lite, as Standard is $160 a month yearly and extra prompts are $99 per 100, with 300 at most before Premium at $422
• Watch out: Claude is tracked through its API using the Haiku model, and crawler analytics needs server log files you upload

Pick PromptSignal if

• Fits if you want Mistral and Llama answers checked as well as ChatGPT's
• Works for companies that need SSO or an on-premise setup, on Enterprise

Look elsewhere if

• Not for you if you want to try before paying, with no trial and fees the terms call non-refundable
• Skip it if cited sources are what you're after, as the listing doesn't show them
• Tight if you track more than 50 prompts, since the next step is a custom plan
• Watch out: it's still onboarding early users, and even Starter's button books a demo
• Watch out: only a monthly price is shown, and no integrations or API are listed

Otterly.AI

• Google AI Mode and Gemini cost $9, $59 or $149 a month each by plan, and Claude $29, $109 or $439, so all seven engines on Standard add $227 a month.
• Google AI Mode, Gemini and Claude are paid add-ons on every plan; Claude is tracked through its API using the Haiku model.
• Lite has one workspace; extra prompts are sold in packs of 100 on Standard and Premium only.
• There is no white-label option; the Looker Studio connector is the suggested way to brand client reports.

PromptSignal

• The site says PromptSignal is onboarding early users, and the Starter plan's button books a demo.
• Starter is capped at 50 prompts; more prompts and hourly updates need the custom Enterprise plan.
• No free trial or free plan is shown, and the terms say fees are non-refundable.
• Only the monthly price is shown, although the terms allow monthly or annual billing.

Otterly.AI

Daily prompt monitoring

Tracks set prompts every day and reports brand mentions, coverage, share of voice and sentiment per engine, in more than 70 countries.

Link citation analysis

Shows which URLs and domains each AI engine cites for a prompt, with a domain ranking to find the sources worth targeting.

AI prompt research

Suggests prompts customers are likely to ask AI search tools about a brand or topic, as a starting set to monitor.

GEO audit

A technical audit of site URLs for generative engine readiness; Lite allows 1,000 audited URLs a month, Premium 10,000.

Agent Analytics

Reports AI agent and crawler visits to your site from server log files you upload.

API, MCP and Looker Studio

An API and MCP server give programmatic access to the data; the Looker Studio connector comes with Standard and above.

PromptSignal

Nine model providers

Queries models from OpenAI, Gemini, Perplexity, Anthropic, Google, xAI, DeepSeek, Mistral and Llama, every day on Starter.

Visibility and ranking position

Reports how often your brand appears in answers and where it is placed in AI-generated lists and comparisons.

Competitor benchmarks

Compares your visibility with direct competitors and category leaders, prompt by prompt.

Sentiment score

Rates the tone of each mention so you can see whether answers help or hurt how the brand is seen.

Prompt suggestions

Suggests prompts to track based on your business, and shows which ones you are winning or losing.

Recommendations and drafts

Gives technical recommendations to raise visibility and writes briefs and drafts aimed at answer engines.

Otterly.AI

• Lite$25

  per month, billed yearly ($29 billed monthly)

  15 prompts tracked daily on ChatGPT, Google AI Overviews, Perplexity and Copilot, unlimited team members, one workspace. No API, MCP or extra prompts.

• Standard$160

  per month, billed yearly ($189 billed monthly)

  100 prompts, API, MCP and Agent Analytics. Extra prompts are $99 per 100 a month, up to 300 more before you must move to Premium.

• Premium$422

  per month, billed yearly ($489 billed monthly)

  400 prompts with everything in Standard. Extra prompts are $99 per 100 a month.

• EnterpriseCustom

  From 1,000 prompts, with SSO, custom terms, a quarterly GEO health check and a dedicated success manager.

PromptSignal

• Starter$99

  per month for 50 prompts

  Unlimited users, daily updates and email support across models from nine AI providers.

• EnterpriseCustom

  Unlimited prompts, hourly updates, SSO and an on-premise deployment option.