Identity confirmedModel verified
Confirmed as the official claude-opus-5-5
Behavior matches the official claude-opus-5-5.
Brand consistency100/100
Model match score (claude-opus-5-5)99/100
Checks13/17 Passed
- Providers
- Little Tree AI
- Claimed model
- claude-opus-5-5
- Plan
- Full check
- Reference
- 108 official models
- Requests
- 19
- Duration
- 12 分钟
01Identity check
Behaviour compared with each official referenceIndependent sample A采样 AValidIndependent sample B采样 BValidIndependent sample C采样 CInvalidIndependent sample D采样 DValidIndependent sample E采样 EValidIndependent sample F采样 FValidReference108 official models · 5/6 Valid
Answer by answer5 answers: 4 match claude-opus-5-5；another 1 match no model clearly on their own
Similarity to official modelsTop 5
- claude-opus-5-5Claimed model99%
- claude-fable-5-1<1%
- gpt-5.2<1%
- gpt-5.4<1%
- kimi-k3<1%
02Test details
17 items · 13 passed · 4 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 claude-opus-5-5 |
| 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 | 5 / 6 valid | 首轮未能判定，已追加一轮；部分采样结果不可用于比对 |
| C-02 | Brand consistency | Match | Behavior belongs to the Anthropic Claude family; brand match score 100 |
| C-03 | Model consistency | Match | 与官方 claude-opus-5-5 吻合，型号一致度 99 |
| C-04 | Cross-brand swap check | None found | Similarity to other brands' models totals under 1% |
| Billing & capabilities | |||
| D-01 | Cache billing | Partly works | On average 36% 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 | Not supported | 流式请求未成功（接口返回 HTTP 524） |
| 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 claude-opus-5-5, 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 |
|---|---|---|
| Claude Code | Didn't connect | The API returned an error. Ask the provider which request formats it supports（HTTP 500）Connected the way Claude Code does (Anthropic format) |
| Codex | Connects | Replied normally and called the toolConnected 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 ratio35.8%
Partly works
On average 36% of repeated requests were billed at the cache price; the rest at the regular price.
Usage this run40.2KCached tokens14.3KNon-cached tokens25.9KAverage per run8.0K
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 · 46.4K received
- 128KRead in full · 724.4K received
Token usage check
Reported usage is used; estimates appear only when none is reported.
Reported usage1.0MThe actual usage reported by the API; this page goes by it.Estimated usage158.3K-305.3KEstimated from this test's requests.Deviation241% aboveThe reported usage is above the estimate; check your bill.Usage checkAbove 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.
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claude-opus-5-5 verification report
Identity confirmedModel verified
Confirmed as the official claude-opus-5-5
Behavior matches the official claude-opus-5-5.
Brand consistency100/100
Model match score (claude-opus-5-5)99/100
Checks13/17 Passed
- Providers
- Little Tree AI
- Claimed model
- claude-opus-5-5
- Plan
- Full check
- Reference
- 108 official models
- Requests
- 19
- Duration
- 12 分钟
01Identity check
Behaviour compared with each official referenceIndependent sample A采样 AValidIndependent sample B采样 BValidIndependent sample C采样 CInvalidIndependent sample D采样 DValidIndependent sample E采样 EValidIndependent sample F采样 FValidReference108 official models · 5/6 Valid
Answer by answer5 answers: 4 match claude-opus-5-5；another 1 match no model clearly on their own
Similarity to official modelsTop 5
- claude-opus-5-5Claimed model99%
- claude-fable-5-1<1%
- gpt-5.2<1%
- gpt-5.4<1%
- kimi-k3<1%
02Test details
17 items · 13 passed · 4 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 claude-opus-5-5 |
| 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 | 5 / 6 valid | 首轮未能判定，已追加一轮；部分采样结果不可用于比对 |
| C-02 | Brand consistency | Match | Behavior belongs to the Anthropic Claude family; brand match score 100 |
| C-03 | Model consistency | Match | 与官方 claude-opus-5-5 吻合，型号一致度 99 |
| C-04 | Cross-brand swap check | None found | Similarity to other brands' models totals under 1% |
| Billing & capabilities | |||
| D-01 | Cache billing | Partly works | On average 36% 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 | Not supported | 流式请求未成功（接口返回 HTTP 524） |
| 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 claude-opus-5-5, 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 |
|---|---|---|
| Claude Code | Didn't connect | The API returned an error. Ask the provider which request formats it supports（HTTP 500）Connected the way Claude Code does (Anthropic format) |
| Codex | Connects | Replied normally and called the toolConnected 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 ratio35.8%
Partly works
On average 36% of repeated requests were billed at the cache price; the rest at the regular price.
Usage this run40.2KCached tokens14.3KNon-cached tokens25.9KAverage per run8.0K
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 · 46.4K received
- 128KRead in full · 724.4K received
Token usage check
Reported usage is used; estimates appear only when none is reported.
Reported usage1.0MThe actual usage reported by the API; this page goes by it.Estimated usage158.3K-305.3KEstimated from this test's requests.Deviation241% aboveThe reported usage is above the estimate; check your bill.Usage checkAbove 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.
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