Callinf
Summary
You're two minutes into a candidate interview or a sales call and you suspect the person on the other end is reading from a ChatGPT script — but you have no signal, just instinct. Callinf puts a live probability score on that suspicion, scoring the audio of whoever you're listening to in real time without routing the call through a third-party recorder.
The detector runs as a browser overlay, captures the audio from whatever tab is playing the call, and scores three independent signals — AI phrasing patterns, spontaneity, and what the docs call 'bookishness' — combining them into a single probability dial. Transcription happens either locally in the browser via Whisper or through Groq cloud, depending on which engine you pick. File upload for recorded calls is a paid-only feature. The tool is honest about its limits: the vendor explicitly states the score is a probabilistic hint, not evidence. Teams doing due diligence on recorded interviews get the same analysis pipeline on uploaded video and audio files.
Bottom line: Callinf earns its place in a recruiter's or call-center lead's toolkit for live screening — but the moment you need an audit trail, exportable transcripts, or anything beyond a session-window history, it stops being enough.
Pricing Plans
Subscription- Price
- $9.99/month
- Free Tier
- 2 hours of transcription
Free
2 hours of transcription, all detection features, session history
- 2 hours transcription
- Live detection
- 20+ languages
Pro
Unlimited hours, file upload analysis, priority support
- Unlimited transcription
- File analysis (MP3, WAV, MP4, etc.)
- Priority support
View full pricing on callinf.com →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Local Whisper processing mode keeps audio entirely in the browser, so teams with call-recording compliance constraints can run detection without routing audio through a third-party server.
- Live three-dial scoring — AI phrasing, spontaneity, bookishness — breaks down why a score is high rather than returning a black-box verdict, which means you can explain the flag to a candidate or manager without pointing at a single number.
- Launches as an overlay in seconds without installing software or modifying the call platform, so there is no IT approval cycle before a recruiter can use it on the next interview.
- File upload analysis handles MP3, WAV, M4A, MP4, MOV, and several other formats, so teams reviewing recorded sales or support calls run the same detection pipeline after the fact rather than needing to catch everything live.
- Support for over 20 languages means multilingual call-center or global recruiting teams are not limited to English-only detection.
Cons
Sign in to edit- Session transcripts are not written to a database and exist only while the detector window is open — there is no exportable history or audit log, so any team that needs a record of flagged calls must maintain their own documentation separately.
- The free tier's transcription cap is hit after a modest number of calls, and file upload is locked behind the paid tier; teams running high call volumes hit the limit during a single shift and face an immediate upgrade decision or a gap in coverage.
- The score is explicitly probabilistic and the vendor states it cannot be treated as proof — HR and legal teams that need defensible evidence of AI-generated speech cannot use callinf output in formal proceedings, which is the condition under which a team stops using this tool and moves to a service that produces timestamped, auditable transcripts with chain-of-custody logging.
- The tool requires a Chromium-based browser; teams standardized on Firefox or Safari cannot use it without switching browsers for every screened call, which creates workflow friction that causes some teams to abandon it in favor of a platform-native or standalone desktop solution.
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About
- Platforms
- Chromium-based browsers (Chrome, Edge)
- API Available
- No
- Self-Hosted
- No
- Last Updated
- 2026-07-08T08:17:43.016Z
Best For
Who it's for
- Call center teams
- Recruiters
- Journalists and researchers
What it does well
- Detect AI voices on sales or support calls
- Verify authenticity during interviews or meetings
- Analyze recorded conversations for AI patterns
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Frequently Asked Questions
- Is Callinf free?
- Callinf has a permanent free tier alongside paid upgrades (paid plans from $9.99/month). You can keep using a baseline version indefinitely without paying.
- Is Callinf open source?
- No — Callinf is a closed-source tool. Source code is not publicly available.
- What platforms does Callinf support?
- Callinf is available on: Chromium-based browsers (Chrome, Edge).
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Curated lists that include this category
Callinf is a browser-based real-time AI-voice detector built by Hireduce. The core workflow is three steps: open the detector in an overlay window, share the audio of the active call tab, and watch a live probability score update as the conversation progresses. Three dials score AI phrasing, speech spontaneity, and linguistic formality (‘bookishness’); natural speech fillers pull the score down while AI-typical marker phrases push it up. The result is a single probability percentage alongside the specific signals that triggered it.
The standout architectural choice is local audio processing. In Local mode, Whisper runs entirely in the browser — audio never leaves the device. In Groq or Server mode, audio is sent to a server for transcription but the vendor states nothing is written to a database and the transcript exists only in the open window. For call-center and HR teams operating under data-handling policies that prohibit third-party call recording, this local-processing option is the reason to choose this tool over a cloud-heavy alternative.
Callinf fits tightly scoped screening use cases: a recruiter running an interview, a journalist verifying whether a source sounds scripted, or a support-team lead spot-checking agent calls. It breaks down when the use case requires scale or evidence. The session history does not persist to a database, so there is no exportable record. The free tier caps transcription at two hours total, which covers a handful of calls before hitting the wall. File analysis — the mode most useful for reviewing recorded calls after the fact — is a paid-only feature. The vendor is explicit that the score cannot serve as proof; teams that need defensible documentation of AI use will find the tool’s probabilistic output insufficient for HR or legal processes.
Callinf requires a Chromium-based browser (Chrome or Edge); tab-audio capture does not function in Firefox or Safari. Over 20 languages are supported including English, Spanish, French, German, Arabic, Chinese, and Japanese, selectable inside the detector. Video files uploaded for analysis are converted to audio client-side before upload, which means the video stream itself is never transmitted.