Retell AI and Vapi AI are good developer products. They do what they say they do. But if you are an operations leader, not a developer, you have been paying for parts and engineering time you should not need.
ConnexŪS Ai is a voice AI platform you fund with a wallet and turn on. You pick a voice, you pick a tier, you go live. The math below is the full story. See the pricing in detail.
Per-minute, honestly priced
A single per-minute rate covers voice in, voice out, LLM reasoning, telephony, and platform access. No line-item invoices. No rounding. No per-seat tax.
- Tier 1, $0.079/min: High-volume (Gemini 2.5 Flash Lite)
- Tier 2, $0.099/min: Balanced (GPT 4.1 Mini)
- Tier 3, $0.129/min: Full GPT 4.1
- Tier 4, $0.149/min: Full GPT 5.4
Across all four tiers, ATHENA lands roughly 10 to 20 percent under what a like-for-like Retell stack costs once you add LLM, transcription, voice, and telephony to its $0.07/min voice baseline. The exact delta moves with the LLM and voice you pick. The wallet is one number, not four invoices.
| Tier | ConnexŪS | Like-for-like Retell | Delta |
|---|---|---|---|
| Tier 1, High-volume | $0.079 | $0.088 | −10.2% |
| Tier 2, Balanced | $0.099 | $0.105 to $0.115 | −6% to −14% |
| Tier 3, Full GPT 4.1 | $0.129 | $0.135 to $0.160 | −4% to −19% |
| Tier 4, Full GPT 5.4 | $0.149 | $0.165 to $0.190 | −10% to −20% |
Fund once. Pay what you use.
Start with $10 and we add $20 in credit. That is a first-load-only launch promo, one per customer. After the promo, minimum wallet load is $25. Credits expire 60 days after they are loaded, which keeps wallets active. Auto-refill triggers at a $10 remaining balance: you pick the refill amount, we keep your V-Reps running.
What Retell and Vapi actually charge
Vapi: a $0.05/min platform fee on top of LLM, STT, TTS, and telephony billed separately. Blended real-world cost lands $0.13 to $0.31/min depending on the stack you assemble.
Retell: $0.07+/min for voice only; LLM and telephony billed separately; enterprise tiers add monthly platform minimums.
Both are developer APIs. Both assume you are supplying engineering hours, procurement cycles, and four to six vendor invoices. That is the real cost. A V-Rep is the opposite of that.
| Capability | ConnexŪS Ai | Retell AI | Vapi AI |
|---|---|---|---|
| Pricing shape | All-in per-minute wallet | Per-minute + line items | Platform fee + line items |
| Who is the buyer | Ops leaders | Engineers | Engineers |
| Deploy time | Minutes, no code | Days to weeks | Days to weeks |
| Contracts | None. No lock-in. | Enterprise minimums | Enterprise minimums |
| Minimum commit | $10 first load | Monthly minimums | Platform + usage |
| Per-minute range | $0.079 to $0.149 | $0.07+ voice only | $0.05 platform + rest |
The wallet is the product
A contract is a promise that you will spend a certain amount. A wallet is the amount you actually spent plus the amount you are ready to spend next. That shift is the whole point. You are not buying seats. You are not buying minutes in a box. You are funding the exact thing that happens on every call and nothing else.
A worked example: 2,000 minutes a month
Ranges are easy to argue with, so run one real month. Say your line handles 2,000 minutes of inbound calls, a small support desk or a single busy intake line.
On ATHENA at the Tier 2 default, the math is one line: 2,000 minutes at $0.099 is $198.00. That figure already contains the LLM tokens, the Deepgram transcription, the voice synthesis, and the telephony. It appears on one ledger, against one wallet, and the month ends there. If you run the high-volume tier at $0.079, the same month is $158. If you want the premium model tier at $0.149, it is $298. You pick the tradeoff, and the number you pick is the number you pay.
Assemble the same month yourself on a developer API and the math changes shape before it changes size. On a Vapi-style stack, the $0.05 platform fee alone is $100 before a single AI line item, and at the real-world blended range of $0.13 to $0.31 the month lands anywhere from $260 to $620. On a Retell-style stack, the $0.07 voice line is $140, and then the LLM, telephony, and any add-ons arrive on their own meters. The total can be competitive at the low end. The problem is that you do not know which end you got until the invoices arrive, and there are three or four of them.
That is the honest version of the comparison: on raw dollars, a well-tuned developer stack can get close. On knowing your cost before the month starts, reconciling one line instead of four, and never discovering a surprise meter, the wallet wins every time. For most operators the spread is 10 to 20 percent. The predictability is the part you feel.
The five-minute migration, in practice
Switching costs are the reason most teams stay overcharged. So we removed them. The migration path from Retell or Vapi is five steps, and none of them involve an engineer:
1. Fund the wallet. Create the account and load the $10 minimum. The $20 launch credit lands on top, so you start with $30 of spendable balance.
2. Import your configuration. Paste your existing Retell or Vapi V-Rep configuration into the importer. It maps the voice, the LLM, the transcriber, and your tool settings automatically.
3. Pick your tier. Four rates, $0.079 to $0.149 per minute. Tier 2 at $0.099 is the default, and you can change it later without touching anything else.
4. Run a test call. Confirm the welcome message, the voice, and the routing match what you were running before.
5. Move the number. Port your existing number or assign a new one. Calls route through ATHENA from that moment, with zero downtime on the line.
The full walkthrough, with what happens to your historical transcripts, is in Inside the Five-Minute Migration.
When you should still pick a developer API
You have a dedicated voice engineer and want to hand-wire every integration. Retell and Vapi are legitimately good at that. If that is not you, the developer APIs are still fine, but most operators we talk to do not fit that description.
Buyer FAQ
Is ConnexŪS Ai actually cheaper than Retell or Vapi?
On an all-in basis, a comparable ATHENA configuration typically lands 10 to 20 percent under a Retell stack, depending on the tier and model you pick. The bigger difference is structural: one blended per-minute rate on one ledger, instead of three or four separately metered line items across LLM, transcription, voice, and telephony.
What does the all-in per-minute rate include?
Everything the call consumes: LLM tokens, Deepgram transcription, your choice of five text-to-speech providers, and the telephony carrier. Voice runs from $0.079 to $0.149 per minute across four tiers, with Tier 2 at $0.099 as the default. There is no separate platform fee.
Can I switch from Retell or Vapi without an engineer?
Yes. Paste your existing Retell or Vapi configuration into the importer, and it maps the voice, LLM, transcriber, and tool settings automatically. Port your number or assign a new one, run a test call, and you are live. Most migrations finish in under five minutes with no code deployed.
Is there a contract or monthly minimum?
No contract and no per-seat pricing. You fund a wallet starting at $10, and usage is metered against it. HIPAA-aligned posture and PII redaction are included in the rate, not sold as a compliance tier.
When are Retell or Vapi the better choice?
If you have a dedicated voice engineer who wants to hand-wire every integration, Retell and Vapi are legitimately good developer APIs. ATHENA is built for the operator who owns the use case and wants configuration instead of code.
Start for $10
Fund a wallet. Pick a voice. Go live. That is the product. See what that looked like for Go iPower and a live IR desk.