Bland
bland-speech
Measured 2026-08-20
Run bland-speech on Speko →One API, every model on this board.
Naturalness
1569
Win % · 95% CI
—
Drift
12
Synth p50
303ms
303–386 p50–p90
Robustness
0.22
Fined:
• fatal · currency — dropped the minus sign (5 of 5 transcripts)
→ we sent “The balance is -$12.50.”
→ it said “The balance is twelve dollars and fifty cents.”
• fatal · decimals — dropped the minus sign (6 of 7 transcripts)
→ we sent “Growth slowed to -0.5% this month.”
→ it said “Growth slowed to 0.5% this month.”
• fatal · large numbers — never said “eight point one billion” (7 of 14 transcripts)
→ we sent “Population reached 8,100,000,000 in 2023.”
→ it said “Population reached eight thousand one hundred thousand twenty twenty three.”
+ 15 more fined
Cost / 1M chars
$40.0
Pay-as-you-go, $0.04/1,000 chars on bland.ai/speech, which states the same rate as "1 million characters total $40". The per-minute figures on bland.ai/pricing are the voice-agent bundle, not this API.
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