Fun-ASR Flash
Provider list prices: no platform markup, pay-as-you-go. These are official list prices. Logged-in customers may see effective prices including workspace discounts on /console/pricing.
Use Fun-ASR Flash in 30 seconds
OpenAI-compatible: swap the base_url, keep your SDK. POST /v1/audio/transcriptions
from openai import OpenAI
client = OpenAI(
base_url="https://synthorai.io/v1",
api_key="sk-syn-...",
)
resp = client.audio.transcriptions.create(
model="fun-asr-flash",
file=open("meeting.mp3", "rb"),
language="en",
)
print(resp.text)import OpenAI from "openai";
import fs from "node:fs";
const client = new OpenAI({
baseURL: "https://synthorai.io/v1",
apiKey: "sk-syn-...",
});
const resp = await client.audio.transcriptions.create({
model: "fun-asr-flash",
file: fs.createReadStream("meeting.mp3"),
});
console.log(resp.text);curl https://synthorai.io/v1/audio/transcriptions \
-H "Authorization: Bearer sk-syn-..." \
-F model="fun-asr-flash" \
-F file=@meeting.mp3package main
import (
"context"
"fmt"
"os"
"github.com/openai/openai-go/v3"
"github.com/openai/openai-go/v3/option"
)
func main() {
client := openai.NewClient(
option.WithBaseURL("https://synthorai.io/v1"),
option.WithAPIKey("sk-syn-..."),
)
f, _ := os.Open("meeting.mp3")
resp, _ := client.Audio.Transcriptions.New(context.TODO(), openai.AudioTranscriptionNewParams{
Model: "fun-asr-flash",
File: f,
})
fmt.Println(resp.Text)
}import com.openai.client.OpenAIClient;
import com.openai.client.okhttp.OpenAIOkHttpClient;
import com.openai.models.audio.transcriptions.*;
import java.nio.file.Paths;
OpenAIClient client = OpenAIOkHttpClient.builder()
.baseUrl("https://synthorai.io/v1")
.apiKey("sk-syn-...")
.build();
Transcription resp = client.audio().transcriptions().create(
TranscriptionCreateParams.builder()
.model("fun-asr-flash")
.file(Paths.get("meeting.mp3"))
.build()).asTranscription();
System.out.println(resp.text());About Fun-ASR Flash
Fun-ASR Flash is the fast offline variant in Alibaba's Fun-ASR speech recognition family, built for transcribing short recordings of up to five minutes.
- Its distinguishing feature per the official docs is prompt-based context injection: instead of maintaining hotword lists, you supply domain terminology directly in a prompt to steer recognition accuracy.
- It keeps the family's broad language coverage, spanning Chinese with regional dialects, English, Japanese, Korean, and many European and Southeast Asian languages.
- On Synthorai it is available through the standard OpenAI-compatible API surface.
Specs & limits
| Modalities | audio → text |
| Features | streaming |
| Audio limits | Synchronous fast recognition, <=5 min / <=2GB per audio; context injection for domain terms; 30+ languages; no diarization |
| Notable | Fast synchronous tier of the Fun-ASR family. |
FAQ
Is the Fun-ASR Flash API free to try?
Yes: new accounts get 10 trial calls and up to $1 in free credit, no card required. That's enough to try Fun-ASR Flash against your real workload before adding a payment method.
What is Fun-ASR Flash best at?
Prompt-based context injection instead of hotwords, plus transcribes short recordings up to five minutes and broad coverage including Chinese regional dialects. See the About section for the full picture from the vendor's own release notes.
How much does Fun-ASR Flash cost?
Fun-ASR Flash costs $0.0021 per minute of audio transcribed on Synthorai: pay-as-you-go, no platform markup, no subscription.
Which languages does Fun-ASR Flash support?
Fun-ASR Flash supports 30+ languages. On Synthorai you call it through POST /v1/audio/transcriptions, the OpenAI transcription API shape.
How do I get access to Fun-ASR Flash?
Point your existing OpenAI SDK at base_url="https://synthorai.io/v1", set model="fun-asr-flash", and you're done. One API key covers every model on the gateway.