SignalWire Review (2026)
Telephony from the team behind FreeSWITCH, with deep call-control primitives and, since 2026, an agent runtime sold by the minute on top.
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SignalWire in Depth
$0.16 a minute for the AI agent runtime, $0.0080 a minute for outbound PSTN transport. SignalWire publishes both on the same page and states an all-in of roughly $0.163 to $0.168 for standard use. Read on its own pricing page 2026-08-16.
That is the answer to the question. The rest of this page is about why the two numbers are twenty times apart, and about a percentage on that same page that does not survive a calculator.
The two layers do not share a price
| What you are buying | Rate | Per |
|---|---|---|
| AI Agent Runtime | $0.16 | minute |
| SIP / WebRTC transport | $0.0030 | minute |
| PSTN 10DLC inbound | $0.0066 | minute |
| PSTN 10DLC outbound | $0.0080 | minute |
| Toll-free inbound | $0.0147 | minute |
| Toll-free outbound | $0.0069 | minute |
The runtime bundles real-time speech recognition, the model, standard synthesis, orchestration and retrieval grounding. Premium voices cost extra and the page says so. So $0.16 is a genuinely all-in agent rate, and it is twenty times the outbound carrier leg underneath it.
This matters because of how SignalWire gets filed. Most comparison pages list it as telephony infrastructure, alongside Twilio and Telnyx, where the published number is the transport rate. Quote $0.0080 for SignalWire against a competitor's agent platform and you are comparing a carrier leg with a whole stack.
The 56% does not survive a calculator
The pricing page carries a table comparing SignalWire against building the same thing yourself at 20,000 minutes a month. Its own numbers:
| SignalWire | DIY stack | |
|---|---|---|
| Rate per minute | $0.163 | $0.13 |
| Hard cost | $3,260 | $2,600 |
| Dev and ops overhead | $0 | $2,000+ |
| Overages and spikes | $0 | $500 |
| Total | $3,260 | $5,100+ |
| Stated saving | 56% | n/a |
$5,100 minus $3,260 is $1,840. Against the $5,100 alternative that is 36%. You reach 56% only by dividing $1,840 by $3,260, which is SignalWire's own price rather than the thing the saving is measured against. A saving is a share of what you would otherwise have spent.
The argument still works at 36%, which is what makes the error unnecessary. Note also that the table concedes the DIY hard cost is lower, at $2,600 against $3,260. SignalWire wins on the operational lines rather than on the rate.
Who answers this query
Searching signalwire pricing on 2026-08-16 returns nine results, and six of them are SignalWire: the pricing page, the cloud agreement, the platform page, the control-plane page, a rate-limits doc and an AI agents page. The remaining three are a Reddit thread in r/VOIP, a G2 listing and one aggregator.
There were no People Also Ask questions at all. That usually means the query has no settled question shape yet. On a pricing query answered almost entirely by the vendor, that is worth knowing before you take the framing on the page at face value.
Strengths and Weaknesses
- Both layers are published, in a currency, per minute, on one page. Most of this category publishes one number or none.
- The runtime is genuinely all-in for standard use, with recognition, model, synthesis and orchestration inside the $0.16.
- Free tier and self-serve signup, so the rate can be checked without a sales call.
- Call-control primitives are deeper than the agent platforms, which is the reason to be here rather than the price.
- The transport rate is what comparison pages quote, and it is 1/20th of what running an agent costs.
- The published "Savings 56%" is computed against SignalWire's own price rather than the alternative. It is 36%.
- The DIY comparator of $0.13 a minute is roughly 2.8 times a list-price component floor.
- Premium voices sit outside the flat rate, and the all-in example assumes you do not use one.
SignalWire Pricing
Free tier and self-serve signup, no minimum and no seat. Billing is usage-only, so the meter is the price: minutes of runtime plus minutes of transport, each metered separately.
At 20,000 minutes a month the runtime alone is $3,200 before any carrier leg. The all-in $0.163 figure assumes inbound SIP transport at about $0.008 passthrough and standard synthesis. Choose a premium voice and that assumption breaks, in the direction the page does not model.
The Verdict
The clearest two-layer pricing in the category, undermined by one percentage on its own page that is computed on the wrong base.
- You need conferencing, transfers and media manipulation more than you need a turnkey agent.
- You want the transport and the agent runtime billed and visible separately.
- You are pricing at low volume and want a free tier and self-serve signup.
- You are comparing on the $0.0080 transport rate. That is the carrier leg, not the agent.
- You want a fixed monthly bill. Everything here is metered.
- You need premium synthesis, which sits outside the flat runtime rate.
Can it take a payment?
Full tracker →Books meetings or resolves the call and hands off. Taking money is out of scope for the product as sold.