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Packagist · #4207 most downloaded on Packagist
Official Telnyx PHP SDK — APIs for Voice, SMS, MMS, WhatsApp, Fax, SIP Trunking, Wireless IoT, Call Control, and more. Build global communications on Telnyx's private carrier-grade network.
Last release 11 days ago
25 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Most releases are documented
notes for 41 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
7 years old
229 releases · first in 2019
Add Speechmatics transcription engine to Call Control API
Full Changelog: v7.48.0...v7.49.0
One column per quarter.
AI-2312: document currency and unit in /models pricing schema
Full Changelog: v7.47.0...v7.48.0
Clean up OpenAI responses API docs
Fix OpenAI chat API reference links
Full Changelog: v7.44.0...v7.45.0 ### Features * Responses endpoint
AI-2294: document /ai/openai/models response and refresh LLM examples
Full Changelog: v7.43.0...v7.44.0
AI-2289 add disable greeting interruption OpenAPI fields
Full Changelog: v7.42.1...v7.43.0
update UAC internal settings URI examples
Full Changelog: v7.42.0...v7.42.1
Add Speechmatics provider to standalone STT spec
Full Changelog: v7.41.0...v7.42.0
Add assistant external LLM forward metadata to OpenAPI
Full Changelog: v7.40.1...v7.41.0
revert enum parsing change that lead to unconditional failure
Full Changelog: v7.40.0...v7.40.1
Add call.hold and call.unhold webhook event documentation
Full Changelog: v7.39.0...v7.40.0
MSG-6841: add missing whatsapp api docs
Add post_conversation_settings to AI Assistants API spec
Full Changelog: v7.37.0...v7.38.0
Add keyterm field to TranscriptionSettingsConfig
Full Changelog: v7.36.2...v7.37.0
populate enum-typed properties with enum instances
Full Changelog: v7.36.1...v7.36.2
client: resolve serialization issue with unions and enums
Full Changelog: v7.36.0...v7.36.1
Add user_idle_reply_secs to TelephonySettings spec
Full Changelog: v7.35.0...v7.36.0
TELAPPS Provide description what params can be used for premium amd
Full Changelog: v7.34.0...v7.35.0
Lower user_idle_timeout_secs minimum from 30s to 10s
Full Changelog: v7.33.0...v7.34.0
[TDA-6425] Fix session analysis API spec: relaxed date_time, remove status & completed_at
Full Changelog: v7.32.1...v7.33.0
remove publish-packagist workflow and Packagist API secrets
Full Changelog: v7.32.0...v7.32.1
Add webhook_urls, webhook_urls_method, webhook_retries_policies to Dial endpoint
Full Changelog: v7.31.0...v7.32.0
client: properly generate file params
Full Changelog: v7.30.0...v7.31.0
api: Merge pull request #46 from stainless-sdks/FixModelRecommendation
Full Changelog: v7.29.0...v7.30.0
MSG-6846: add GET /profile/photo docs for whatsapp API
Full Changelog: v7.28.0...v7.29.0
add shared CallAssistantRequest schema for call-control assistant object
Full Changelog: v7.27.0...v7.28.0
TELAPPS-5707: Add privacy parameter to Call Control dial and transfer
Full Changelog: v7.26.0...v7.27.0
TELAPPS-5689: Pronunciation dictionaries API docs
Full Changelog: v7.25.0...v7.26.0
CW-3815 fix PATCH /wirelss_blocklists/{id} endpoint
Full Changelog: v7.24.0...v7.25.0
Add oneOf constraint for Url/Texml mutual exclusivity in InitiateCallRequest
Full Changelog: v7.23.0...v7.24.0
api: Merge pull request #39 from stainless-sdks/revert-a988c49-stainless-changes
Full Changelog: v7.22.0...v7.23.0
Add ai_calls endpoint documentation to OpenAPI spec
Full Changelog: v7.21.0...v7.22.0
AI-2180: Add message_template to SendMessageTool schema
Full Changelog: v7.20.0...v7.21.0
add enabled boolean to recording_settings [AI-2178]
Full Changelog: v7.19.0...v7.20.0
Full Changelog: v7.18.0...v7.19.0 ### Features * api: manual updates
MSG-6666: Add template and text properties to WhatsApp send message schema
Full Changelog: v7.17.0...v7.18.0
Full Changelog: v7.16.0...v7.17.0 ### Features * Assistants: add observability
MSG-6673: Add WhatsApp verification endpoint and profile settings
Full Changelog: v7.15.0...v7.16.0
websocket: add STT/TTS WebSocket streaming support
Full Changelog: v7.14.1...v7.15.0
rename number-reputation ToS route to use underscores
Full Changelog: v7.14.0...v7.14.1
Full Changelog: v7.13.0...v7.14.0 ### Features * api: manual updates
Full Changelog: v7.12.0...v7.13.0 ### Features * api: manual updates
Full Changelog: v7.11.0...v7.12.0 ### Features * New tools api
TELAPPS-5685: Add store_fields_as_variables to WebhookToolParams
Full Changelog: v7.10.0...v7.11.0
api: Merge pull request #30 from stainless-sdks/fix-schemaUnionDiscriminatorMissing
Full Changelog: v7.9.0...v7.10.0
Full Changelog: v7.8.0...v7.9.0 ### Features * api: manual updates
Add Minimax provider support to Voice Designs and Voice Clones API spec
Full Changelog: v7.7.0...v7.8.0
TELAPPS-5668: Add call.cost webhook event documentation
Full Changelog: v7.6.0...v7.7.0
Full Changelog: v7.5.0...v7.6.0 ### Features * api: manual updates
add message_history, send_message_history_updates, participants to AIAssistantStartRequest
Full Changelog: v7.4.0...v7.5.0
port-4690: fix LOA configuration preview path (singular → plural)
Full Changelog: v7.3.0...v7.4.0
add ai_assistant_join call control command OpenAPI spec
Full Changelog: v7.2.0...v7.3.0
CW-2881 update filter[action_type] enum
AI-2132: Add warm_message_delay_ms to transfer tool OpenAPI spec
Full Changelog: v7.0.0...v7.1.0
Add enable_thinking parameter to chat completions API
Full Changelog: v6.74.0...v7.0.0
Full Changelog: v6.73.1...v6.74.0 ### Features * api: manual updates
add title to InviteTool.invite for Stainless SDK
Full Changelog: v6.73.0...v6.73.1
messaging: add wait_seconds to OutboundMessagePayload example
Full Changelog: v6.72.0...v6.73.0
Full Changelog: v6.71.0...v6.72.0 ### Features * api: manual updates
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