Rspamd
Rspamd 4.3 fixes SPF evaluation order and rejects weak DKIM keys, with results that change.
Comparison · Comms
OpenPhone vs Session
A side-by-side editorial comparison of OpenPhone and Session — release velocity, themes, recent moves, and the top alternatives to consider.
OpenPhone vs Session: at a glance
| Feature | OpenPhone | Session |
|---|---|---|
| Sector | Comms | Comms |
| Velocity score | 0.0 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | business voip, ai phone agent, call routing, smb communication | private messaging, post-quantum, session pro, community funded |
| Last editorial update | 6mo ago | 1d ago |
| Website | — | Visit → |
What is OpenPhone?
OpenPhone turns Sona into a deployable front-line AI agent with transfers and per-scenario instructions.
OpenPhone is hardening Sona, its AI phone agent, into something businesses can actually put in front of customers. Sona can now route calls to the right teammate when a human is needed, and admins can give it custom instructions per scenario (lead qualification, cancellations, booking) with templates to start from. Around it, the call flow builder keeps maturing: multiple routing setups with quick switching, in-place inbox switching during flow construction, and a Go-to Step primitive for cleaner branches.
What is Session?
Session ships new app versions and node upgrades while Pro stays on hold.
Session's 2026 started with a funding scare, then community support restored its runway in June. Session Pro reached a beta in app stores in September before its launch was paused in October during talks with an allied privacy ecosystem. Since then the work is infrastructure: lighter Session Node software, an update on Protocol v2, and on November 9 new iOS, Android and Desktop releases with further voluntary node upgrades and progress on a unified client.
OpenPhone vs Session: editorial side-by-side
OpenPhone
0.0COMMS
OpenPhone turns Sona into a deployable front-line AI agent with transfers and per-scenario instructions.
◆ Current state
OpenPhone is hardening Sona, its AI phone agent, into something businesses can actually put in front of customers. Sona can now route calls to the right teammate when a human is needed, and admins can give it custom instructions per scenario (lead qualification, cancellations, booking) with templates to start from. Around it, the call flow builder keeps maturing: multiple routing setups with quick switching, in-place inbox switching during flow construction, and a Go-to Step primitive for cleaner branches.
◆ Where it's heading
The core bet is an AI-handles-first-contact, humans-handle-edge-cases pattern. Each Sona release is closing a deployment-blocker (instructions, transfers, free trial), while the call-flow tooling underneath is getting more flexible so AI and human routing can coexist in one config. Plan-tier expansion (call hold on Starter) suggests OpenPhone is also chasing volume in the lower segment.
◆ Prediction
Expect Sona to gain CRM-aware context (caller history, deal state) and outbound use cases — proactive callbacks, scheduled follow-ups. Pricing for Sona usage is likely to evolve from a flat add-on toward usage- or outcome-based once volume appears.
Session
5.0COMMS
Session ships new app versions and node upgrades while Pro stays on hold.
◆ Current state
Session's 2026 started with a funding scare, then community support restored its runway in June. Session Pro reached a beta in app stores in September before its launch was paused in October during talks with an allied privacy ecosystem. Since then the work is infrastructure: lighter Session Node software, an update on Protocol v2, and on November 9 new iOS, Android and Desktop releases with further voluntary node upgrades and progress on a unified client.
◆ Where it's heading
With Pro paused, Session is spending its effort on the network and the client codebase: lighter nodes, Protocol v2 with forward secrecy and post-quantum encryption, and one client for all platforms. Monetization waits on the outside talks.
◆ Prediction
Expect a Protocol v2 alpha or the unified client to be the next visible release; Pro's timing depends on talks the entries do not detail.
Alternatives to OpenPhone and Session
Other Comms products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either OpenPhone or Session.
Twilio
Twilio's voice AI stops cutting callers off mid-sentence, using its own turn-taking model.
Salesmsg
Salesmsg adds call-back requests and a one-click Emergency Stop for all outbound texts.
Element
Element 1.12.35 follows the call picture-in-picture release with one desktop storage fix.
Krisp
Krisp moves call transcripts and live captions to cloud transcription in KrispCX 2.84.4.
Misskey
Misskey 2026.11 ships: a leaner start script, and Node.js 22 no longer boots.
See all OpenPhone alternatives → · See all Session alternatives →
Recent activity from OpenPhone and Session
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoSessionDevelopment Update - New Releases and Session Node Upgrades
- 26d agoSessionSmaller nodes, stronger encryption: Oxen 11.7, Storage Server 2.12 and Session Router 1.1
- 1mo agoSessionSession Protocol v2: An Update on PFS, Post-Quantum and Linked Devices
- 1mo agoSessionSession is taking part in Octant's Epoch 13 privacy round
- 1mo agoSessionDevelopment Update - Stability Fixes and Network Improvements
- 2mo agoSessionSession Pro beta submitted to app stores
- 1y agoOpenPhoneCall hold now available on Starter plan
- 1y agoOpenPhoneTransfer calls from Sona to your team ⚡
- 1y agoOpenPhoneControl how Sona responds in different situations
- 1y agoOpenPhoneCreate multiple call flows, and switch back and forth easily
- 1y agoOpenPhoneImproved navigation for call flow building
- 1y agoOpenPhoneBuild cleaner call flows with the Go-to Step feature
Frequently asked questions
What is the difference between OpenPhone and Session?
They serve adjacent needs but don't currently overlap on shipped themes. Session is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is OpenPhone better than Session?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Session is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.
What are the best alternatives to OpenPhone?
Top OpenPhone alternatives in Comms are ranked by recent ship velocity. Browse the "OpenPhone alternatives" section above for the current picks, or visit /alternatives/openphone for the full list with editorial commentary on each.
What are the best alternatives to Session?
Top Session alternatives in Comms are ranked by recent ship velocity. Browse the "Session alternatives" section above for the current picks, or visit /alternatives/session for the full list with editorial commentary on each.