What is Conformer2?

Conformer-2 Conformer‑2 is an automatic speech recognition model trained on 1.1 million hours of English audio, improving accuracy for proper nouns, alphanumeric text, and noisy environments. It delivers faster inference, reducing transcription time for an hour‑long file from 4.

01 minutes to 1.85 minutes, and offers up to 55 % lower latency across file durations. The model incorporates noisy student–teacher training with an ensemble of teacher models to increase robustness and generalization. Conformer‑2 supports a new API parameter, `speech_threshold`, allowing users to skip low‑speech content and control processing costs.

Conformer2 details

Company
AssemblyAI Inc.
Jurisdiction
Delaware
Built for
Developers
Stated compliance
HIPAA

Compliance as stated in Conformer2's own published documentation.

Conformer2 tech specs

Works with
OpenAI / Whisper Anthropic / Claude Google / Gemini
Cloud
AWS

Conformer2 pricing

Freemium
Key phrases $0.01/hr
Profanity filtering $0.01/hr
Sentiment analysis $0.02/hr
Custom formatting $0.03/hr
Summarization $0.03/hr
Pii audio redaction $0.05/hr
Translation $0.06/hr
Entity detection $0.08/hr
Auto chapters $0.08/hr
Pii redaction $0.08/hr
Speaker diarization add-on $0.12/hr
Pay as you go $0.15/hr
Universal-3 pro $0.15/hr
Universal-2 $0.15/hr
Universal-streaming $0.15/hr
Universal-streaming multilingual $0.15/hr
Topic detection $0.15/hr
Content moderation $0.15/hr
Whisper-streaming $0.30/hr
Gpt-5 nano $0.05/1m tokens (input)
Gpt-oss-20b $0.07/1m tokens (input)
Gemini 2.5 flash lite $0.10/1m tokens (input)
Gpt-oss-120b $0.15/1m tokens (input)
Qwen3 next 80b a3b $0.15/1m tokens (input)
Qwen3 32b $0.15/1m tokens (input)
Gpt-5-mini $0.25/1m tokens (input)
Claude 3 haiku $0.25/1m tokens (input)
Gemini 2.5 flash $0.30/1m tokens (input)
Gemini 3 flash $0.50/1m tokens (input)
Kimi k2.5 $0.60/1m tokens (input)
Claude 3.5 haiku $0.80/1m tokens (input)
Claude 4.5 haiku $1.00/1m tokens (input)
Gpt-5.1 $1.25/1m tokens (input)
Gpt-5 $1.25/1m tokens (input)
Gemini 2.5 pro $1.25/1m tokens (input)
Gpt-5.2 $1.75/1m tokens (input)
Gpt 4.1 $2.00/1m tokens (input)
Gemini 3 pro $2.00/1m tokens (input)
Claude 4.6 sonnet $3.00/1m tokens (input)
Claude 4.5 sonnet $3.00/1m tokens (input)
Claude 4 sonnet $3.00/1m tokens (input)
Chatgpt-4o $5.00/1m tokens (input)
Claude 4.6 opus $5.00/1m tokens (input)
Claude 4.5 opus $5.00/1m tokens (input)
Claude 4 opus $15.00/1m tokens (input)
Auto-renewal
Yes

Conformer2's key features

  • Real-time streaming transcription
  • Automatic speaker diarization
  • Multi-language support with code-switching
  • Context-aware prompting 1500+ words
  • LLM integration gateway
  • Automatic punctuation and casing
  • Zero rate limits infrastructure

Conformer2 use cases

  • Real-time medical dictation transcription for clinicians, guaranteeing high accuracy on drug names and patient data even in noisy hospital environments, with up to 55 % lower latency compared to legacy ASR systems
  • Automated call center analytics and sentiment classification, delivering fast, accurate transcriptions of noisy phone conversations, enabling instant quality assurance and agent coaching with minimal delay
  • Live captioning and transcript generation for virtual meetings and webinars, providing low‑latency, highly accurate speech‑to‑text that remains robust in crowded backgrounds and multiple speakers

Conformer2 user reviews

Based on 10 reviews, 70% of users recommend Conformer2, rated highly for quality results.

7
recommend
3
don't
10 reviews

Liked for

Quality results 7 of 7
Easy to use 5 of 7
Worth the price 4 of 7
Good integrations 4 of 7
All key features 3 of 7

Disliked for

Inconsistent results 2 of 3
Hard to use 2 of 3
Missing features 2 of 3
Not worth the price 1 of 3
Lacks integrations 1 of 3

Would you recommend Conformer2?

Who is Conformer2 for?

  • Speech recognition scientists
  • Audio analysts
  • Digital developers
  • Technical researchers
  • Data engineers

Conformer2 FAQ

Is Conformer2 free?

Partly. Conformer2 has a free plan with usage limits, and paid plans unlock the full feature set. Plans include Key phrases at $0.01/hr, Profanity filtering at $0.01/hr, Sentiment analysis at $0.02/hr and Custom formatting at $0.03/hr.

Is Conformer2 safe to use?

Conformer2 states HIPAA compliance in its own published documentation. Conformer2 is operated by AssemblyAI Inc., registered in Delaware. Conformer2 carries the TopAI.tools verified mark, which we award after a manual review of pricing transparency, published terms, public following and working functionality.

Is Conformer2 good?

Conformer2 has a 70% recommendation rate from 10 reviewers on TopAI.tools. Reviewers rate it highest on quality of results and ease of use.

What does Conformer2 do with my data?

Conformer2 states that customer content may be used to train its models. Its privacy policy states that personal data is sold or shared for marketing purposes. Data may be shared with third-party service providers that help run the product.

Does Conformer2 auto-renew or offer refunds?

Conformer2 subscriptions renew automatically until you cancel.

Does Conformer2 have an API?

Yes. Conformer2 offers an API, so you can call it from your own applications instead of using the interface directly.

Who made Conformer2?

Conformer2 is built and operated by AssemblyAI Inc., a company registered in Delaware.

Which AI models does Conformer2 use?

Conformer2 is built on OpenAI / Whisper, Anthropic / Claude and Google / Gemini. Which models you can reach may depend on your plan.

Compliance, privacy and billing terms are as stated in each product's own published documentation and have not been independently verified by TopAI.tools.

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