Endpoint · inferencePOSTopenai.mm.family /x402/v1/audio/speech
OpenAI text to speech (gpt-4o-mini-tts, tts-1, tts-1-hd), paid per call in USDC.
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OpenAI text to speech (gpt-4o-mini-tts, tts-1, tts-1-hd), paid per call in USDC. OpenAI list $15 / $30 per 1M characters (tts-1 / tts-1-hd) or $12 per 1M audio tokens (gpt-4o-mini-tts, quoted at 4 per character), plus $0.0005 (Base) or $0.0005 (Solana) per call; up to 4096 characters. Standard OpenAI body (input, voice, response_format, speed). Returns the audio bytes. One endpoint per model: /x402/v1/models/<key>/audio/speech. Rates: https://openai.mm.family/x402/pricingOverview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://openai.mm.family/x402/v1/audio/speech
Seen
first 2 days ago · last 16 hr ago
4 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC, Solana
Listed on?
Base, Solana
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.400 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.600: 0.600 uncertain ? + 0.000 short ? · 0.050 to D
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.000 | 0.000 | 0 | −0.600 | |
| latency p95 it answered as fast as its class |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.400 | gap to 1.000 = 0.600 · 0.000 short · 0.600 uncertain | 0.400 | −0.000 | −0.600 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.000 liveness
+ 0.200 × 1.000 latency p95
+ 0.200 × 1.000 price stability
= 0.400 → UNRATED: 2 of 30 paid calls weights 2026.09.6 · 2 samples · seed cap_01M3XJAGQXGVPNBM6WVXVBPBP7|2026-09-02T22:39:03.450Z|2026.09.6
Verify it yourself
npx teppi-check https://openai.mm.family/x402/v1/audio/speechcurl -s https://api.teppi.xyz/v1/trust/cap_01M3XJAGQXGVPNBM6WVXVBPBP7