Choosing this model
Selection advice by Y-API. The checks below are suggested evaluations, not published test results.
Where to start
Use it as a baseline for support-ticket classification, text cleanup and small code explanations. Keep a set of difficult examples before deciding whether to move the workload to a newer Flash revision.
What to watch for
The unsuffixed API ID is not a promise to follow the latest Flash model. OpenRouter labels this entry 0423. Do not assume it gains the image input or behavior of V4.1 Flash.
Model specifications
These are OpenRouter model-level specifications, not a Y-API compatibility test. A particular route may accept fewer input formats, parameters or tokens. Verify the features you need with a small request; a successful text response does not validate vision or tool calling.
- Context window
- 1,048,576 tokens
- Input
- Text
- Output
- Text
- Listed on OpenRouter
- Parameters listed by OpenRouter
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_completion_tokensmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_atop_ktop_logprobstop_p
Estimate your cost
The current catalog marks this model as free: calls do not deduct credit. This does not promise unlimited capacity, permanent availability or a future free price.
- Estimated credit consumed
- Free — no credit deducted
- Estimated cash equivalent
- Free — no credit deducted
Illustrative token budget, not measured usage or a quote. Includes input and output; excludes separate media charges, cache discounts and retries. Include billed reasoning tokens in your output budget where applicable. Actual billing follows usage returned by the service.
$1 paid adds $10 of credit. Cash equivalent = credit consumed ÷ 10; this is not the model publisher’s list price.
| Model | Estimated credit consumed | Estimated cash equivalent |
|---|---|---|
| DeepSeek V4 Flash 0423 | Free — no credit deducted | |
| DeepSeek V4 Flash 0731 | $0.30 | $0.03 |
| DeepSeek V4.1 Flash | $0.70 | $0.07 |
Use the API
These minimal, text-only requests use the exact Y-API model ID. They do not demonstrate image, audio, video, file or tool support. The output limit also needs room for reasoning; an empty answer with finish_reason=length can mean the budget was exhausted.
A task to try
Classify this ticket as billing, login or bug. Give one reason: I was charged twice for the same invoice.
Set the TOKEN environment variable to a key from your console. Run this on your server or locally; never expose a key in browser code or a public repository.
curl --fail-with-body --silent --show-error --max-time 120 \
'https://api.y-api.bestvirtualgoods.com/v1/chat/completions' \
-H "Authorization: Bearer ${TOKEN:?Set TOKEN first}" \
-H 'Content-Type: application/json' \
--data-binary @- <<'JSON'
{
"model": "deepseek/deepseek-v4-flash",
"messages": [
{
"role": "user",
"content": "Classify this ticket as billing, login or bug. Give one reason: I was charged twice for the same invoice."
}
],
"max_tokens": 4096
}
JSONHow to evaluate the result
Check that the category is billing and the reason uses only the ticket. Add ambiguous and multi-issue tickets; measure wrong routing, not just fluent wording.
Before you choose
Is this the same model as V4 Flash 0731?
No. They have separate catalog IDs. The publisher describes 0731 as the official release superseding the preview. Keep the exact ID in saved evaluations and re-test before changing it.
Sources & scope
Technical facts come from the cited model page and, where available, its linked publisher card. A card describes that checkpoint; it is not proof of the weights a gateway serves. Prices come only from the Y-API catalog. We do not claim measured latency, uptime or benchmark scores for this endpoint.