Bolna AI Updates for May, 2026

​

Custom SIP Headers on Inbound BYOT Calls

​

Async CSV reports for large agents and batches

• Long-running exports no longer time out the dashboard request
• You receive an email with a download link once the report is ready
• Smaller exports continue to download inline, with no change

​

Transfer Phone Number Between Sub-Accounts

​

Welcome Message: Ignore User Speech Now Available to All

​

Search Call History by Phone Number

​

Call History: Multi-Select Filters and Agent Search

• Multi-select filters: Filter by status, call type, provider, batch ID, and date range using multi-select controls.
• Searchable agent picker: The agent dropdown now has a live search field so you can find the right agent quickly regardless of how many agents are in your account.
• Execution detail view: Clicking an execution opens a dedicated detail panel.

​

Improved Prompt Editor

• Typed inline chips: Variables (e.g. {name}, {email}) and function-tool references are inserted as chips with scope-aware colours, making the structure of your prompt visible at a glance.
• Prompt library modules splice in: Inserting a module from the prompt library copies its content directly into the editor. No live link is kept, so module updates don’t silently change deployed agent prompts.
• Live token counter: An estimated token count updates as you type, helping you stay within model context limits.
• Module tags and categories: The prompt library picker now shows tags and category badges on each module for faster scanning.
• Multilingual: All language tabs in multilingual agents use the rich editor.

​

SIP trunks — TCP, TLS, and audio encryption

​

Recording URLs Moving to Bolna-Hosted Endpoint — Action Required by June 1

https://api.bolna.ai/recordings/call/{execution-id}
https://api.bolna.ai/recordings/transfer/{execution-id}

https://bolna-recordings-india.s3.amazonaws.com/{vendor}/{file}.mp3

• GET /executions/{execution-id} — telephony_data.recording_url and transfer_call_data.recording_url
• Post-call webhook payloads — the recording_url field
• Dashboard — already updated

1. Audit anywhere your system stores, forwards, parses, or fetches recording URLs — CRMs, dashboards, post-call webhooks, data pipelines.
2. Update base URL handling to call https://api.bolna.ai/recordings/call/{execution-id} instead of the raw S3 URL.
3. Remove any caching of the resolved pre-signed link; always fetch fresh.
4. Test your updated integration while direct S3 URLs are still active.

​

OpenAI Realtime Transcriber — GA with gpt-realtime-whisper

• Model updated to gpt-realtime-whisper — OpenAI’s natively streaming transcription model
• Server-side VAD is built into the model — no manual endpointing configuration required
• Streaming interim transcript deltas arrive as the caller speaks
• effort parameter renamed to delay for clarity (controls latency vs accuracy trade-off)
• Optional near-field noise reduction toggle

​

Deepgram Flux Transcriber — Now Available

• flux-general-en — English-optimised Flux model
• flux-general-multi — Multilingual Flux model with built-in Language Identification

• Configurable EndOfTurn Threshold (eot_threshold) — control how confident the model must be before committing to a final transcript
• EndOfTurn Timeout (eot_timeout_ms) — maximum silence window before forcing a turn end, from 300 ms to 3 s
• Eager EndOfTurn — Bolna can start an LLM request speculatively on EagerEndOfTurn, cutting perceived response latency; if the speaker continues (TurnResumed), the request is cancelled
• Language Identification (flux-general-multi only) — detected languages are returned per turn, enabling dynamic multilingual handling without pre-configuring a language

​

Custom Headers for Webhooks