A newer test record is availableThis report preserves the result at the time of testing and remains valid as a record. You can also view the newer report。
Identity confirmedModel verified
Confirmed as the official deepseek-v4.1-flash
Behavior matches the official deepseek-v4.1-flash.
Brand consistency98/100
Model match score (deepseek-v4.1-flash)98/100
Checks15/17 Passed
- Providers
- Little Tree AI
- Claimed model
- deepseek-v4.1-flash
- Plan
- Full check
- Reference
- 108 official models
- Requests
- 16
- Duration
- 1 分钟
01Identity check
Behaviour compared with each official referenceIndependent sample A采样 AValidIndependent sample B采样 BValidIndependent sample C采样 CValidReference108 official models · 3/3 Valid
Answer by answer3 answers: 1 match deepseek-v4.1-flash；another 2 match no model clearly on their own
Similarity to official modelsTop 5
- deepseek-v4.1-flashClaimed model98%
- qwen3.7-max2%
- qwen3.7-plus<1%
- grok-4-1-fast-non-reasoning<1%
- mimo-v2.5<1%
02Test details
17 items · 15 passed · 2 notes · 0 failed| No. | Check | Result | Methodology |
|---|---|---|---|
| Connectivity & auth | |||
| A-01 | Endpoint reachable | Passed | The endpoint responds normally |
| A-02 | Key authentication | Passed | API key is valid and allowed to make calls |
| A-03 | Model on sale | Passed | The model list includes deepseek-v4.1-flash |
| API conformance | |||
| B-01 | Basic call | Passed | Returns the expected content as instructed |
| B-02 | Response structure | Meets the spec | All OpenAI-compatible fields are present |
| B-03 | Model ID echoed back | Match | The model ID in the response matches the request |
| B-04 | Usage record | Complete and consistent | Input, output and total are all present, and the total equals the sum |
| B-05 | Output cleanliness | Nothing added | No inserted ads, watermarks or extra notes found |
| Identity check | |||
| C-01 | Independent sampling | 3 / 3 valid | All independent samples can be used for comparison |
| C-02 | Brand consistency | Match | Behavior belongs to the DeepSeek family; brand match score 98 |
| C-03 | Model consistency | Match | 与官方 deepseek-v4.1-flash 吻合，型号一致度 98 |
| C-04 | Cross-brand swap check | None found | Similarity to other brands' models totals under 5% |
| Billing & capabilities | |||
| D-01 | Cache billing | Partly works | On average 49% of repeated requests were billed at the cache price; the rest at the regular price. |
| D-02 | Context length | 128K passed | 32K / 128K: every tier was read in full. |
| D-03 | Streaming output | Normal | Streamed content is complete |
| D-04 | Tool use | Supported | Returns the correct function name and arguments |
| D-05 | Structured output | Did not follow the schema | The response did not follow the required JSON schema |
03Which apps can connect
Tried once per app with deepseek-v4.1-flash, the way each app connectsUsing this test’s address, key and model, we test responses and tool calls in each app’s API format. We do not launch the apps or test installation, sign-in or complete tasks.
| Software | Result | Methodology |
|---|---|---|
| Codex | Not tested | The test could not complete due to rate limiting or a temporary API error. Try again later（HTTP 502）Connected the way Codex does (OpenAI Responses format) |
| Cherry Studio, Chatbox, LobeChat, Open WebUI, Cline | Connects | Replied normally and called the toolConnected the way Cherry Studio and similar apps do (OpenAI-compatible format) |
Cache billing check
The same long content was sent 5 times: the 1st is billed at the regular price, and from the 2nd on the repeated part should be billed at the cache price.
Cache billing ratio49.1%
Partly works
On average 49% of repeated requests were billed at the cache price; the rest at the regular price.
Usage this run47.0KCached tokens20.5KNon-cached tokens26.5KAverage per run9.4K
Usage reportedReportedCache billingHappenedResultPartly works
Cache share by testThis is only the cache share the endpoint reported; the real discount is on the bill
Context length check
Long documents are sent tier by tier to check whether the whole document is read.
Verified up to 128K
32K / 128K: every tier was read in full.
Reference windowVerified up to 128KThe model center has no reference context window for this model yet.Tested context lengths32K / 128KTested from short to long, stopping at the first failure.
- 32KRead in full · 27.8K received
- 128KRead in full · 122.0K received
Token usage check
Reported usage is used; estimates appear only when none is reported.
Reported usage200.2KThe actual usage reported by the API; this page goes by it.Estimated usage158.0K-304.3KEstimated from this test's requests.DeviationWithin the estimateThe reported usage is within the estimated range.Usage checkMatches the estimateFigures are as reported by the API; your bill is authoritative.
Method: independent samples from the tested endpoint are compared against reference samples collected from official channels; billing, context and capability items come from real calls. API keys, request bodies and raw model output are not stored.
This report reflects the endpoint at the time of testing.
Reviews
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Mozhenzhen verification report · Measured with real calls
deepseek-v4.1-flash verification report
A newer test record is availableThis report preserves the result at the time of testing and remains valid as a record. You can also view the newer report。
Identity confirmedModel verified
Confirmed as the official deepseek-v4.1-flash
Behavior matches the official deepseek-v4.1-flash.
Brand consistency98/100
Model match score (deepseek-v4.1-flash)98/100
Checks15/17 Passed
- Providers
- Little Tree AI
- Claimed model
- deepseek-v4.1-flash
- Plan
- Full check
- Reference
- 108 official models
- Requests
- 16
- Duration
- 1 分钟
01Identity check
Behaviour compared with each official referenceIndependent sample A采样 AValidIndependent sample B采样 BValidIndependent sample C采样 CValidReference108 official models · 3/3 Valid
Answer by answer3 answers: 1 match deepseek-v4.1-flash；another 2 match no model clearly on their own
Similarity to official modelsTop 5
- deepseek-v4.1-flashClaimed model98%
- qwen3.7-max2%
- qwen3.7-plus<1%
- grok-4-1-fast-non-reasoning<1%
- mimo-v2.5<1%
02Test details
17 items · 15 passed · 2 notes · 0 failed| No. | Check | Result | Methodology |
|---|---|---|---|
| Connectivity & auth | |||
| A-01 | Endpoint reachable | Passed | The endpoint responds normally |
| A-02 | Key authentication | Passed | API key is valid and allowed to make calls |
| A-03 | Model on sale | Passed | The model list includes deepseek-v4.1-flash |
| API conformance | |||
| B-01 | Basic call | Passed | Returns the expected content as instructed |
| B-02 | Response structure | Meets the spec | All OpenAI-compatible fields are present |
| B-03 | Model ID echoed back | Match | The model ID in the response matches the request |
| B-04 | Usage record | Complete and consistent | Input, output and total are all present, and the total equals the sum |
| B-05 | Output cleanliness | Nothing added | No inserted ads, watermarks or extra notes found |
| Identity check | |||
| C-01 | Independent sampling | 3 / 3 valid | All independent samples can be used for comparison |
| C-02 | Brand consistency | Match | Behavior belongs to the DeepSeek family; brand match score 98 |
| C-03 | Model consistency | Match | 与官方 deepseek-v4.1-flash 吻合，型号一致度 98 |
| C-04 | Cross-brand swap check | None found | Similarity to other brands' models totals under 5% |
| Billing & capabilities | |||
| D-01 | Cache billing | Partly works | On average 49% of repeated requests were billed at the cache price; the rest at the regular price. |
| D-02 | Context length | 128K passed | 32K / 128K: every tier was read in full. |
| D-03 | Streaming output | Normal | Streamed content is complete |
| D-04 | Tool use | Supported | Returns the correct function name and arguments |
| D-05 | Structured output | Did not follow the schema | The response did not follow the required JSON schema |
03Which apps can connect
Tried once per app with deepseek-v4.1-flash, the way each app connectsUsing this test’s address, key and model, we test responses and tool calls in each app’s API format. We do not launch the apps or test installation, sign-in or complete tasks.
| Software | Result | Methodology |
|---|---|---|
| Codex | Not tested | The test could not complete due to rate limiting or a temporary API error. Try again later（HTTP 502）Connected the way Codex does (OpenAI Responses format) |
| Cherry Studio, Chatbox, LobeChat, Open WebUI, Cline | Connects | Replied normally and called the toolConnected the way Cherry Studio and similar apps do (OpenAI-compatible format) |
Cache billing check
The same long content was sent 5 times: the 1st is billed at the regular price, and from the 2nd on the repeated part should be billed at the cache price.
Cache billing ratio49.1%
Partly works
On average 49% of repeated requests were billed at the cache price; the rest at the regular price.
Usage this run47.0KCached tokens20.5KNon-cached tokens26.5KAverage per run9.4K
Usage reportedReportedCache billingHappenedResultPartly works
Cache share by testThis is only the cache share the endpoint reported; the real discount is on the bill
Context length check
Long documents are sent tier by tier to check whether the whole document is read.
Verified up to 128K
32K / 128K: every tier was read in full.
Reference windowVerified up to 128KThe model center has no reference context window for this model yet.Tested context lengths32K / 128KTested from short to long, stopping at the first failure.
- 32KRead in full · 27.8K received
- 128KRead in full · 122.0K received
Token usage check
Reported usage is used; estimates appear only when none is reported.
Reported usage200.2KThe actual usage reported by the API; this page goes by it.Estimated usage158.0K-304.3KEstimated from this test's requests.DeviationWithin the estimateThe reported usage is within the estimated range.Usage checkMatches the estimateFigures are as reported by the API; your bill is authoritative.
Method: independent samples from the tested endpoint are compared against reference samples collected from official channels; billing, context and capability items come from real calls. API keys, request bodies and raw model output are not stored.
This report reflects the endpoint at the time of testing.
Reviews
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