Choosing this model
Selection advice by Y-API. The checks below are suggested evaluations, not published test results.
Where to start
Use it where a change spans several files and the failure mode is a plausible-looking edit that breaks a distant caller. Give it the full diff plus the call sites, and ask it to name what it checked.
What to watch for
This entry lists only the `openai` endpoint upstream, so an Anthropic-native client pointed at `/v1/messages` is not the path the catalog advertises here. Successor positioning is also not a measured improvement over Opus 5 — treat it as a hypothesis to test.
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
- 1,000,000 tokens
- Input
- Text · Image · File
- Output
- Text
- Listed on OpenRouter
- Parameters listed by OpenRouter
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity
API pricing & cost estimate
- Estimated credit consumed
- $14.00
- Estimated cash equivalent
- $1.40
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 |
|---|---|---|
| Claude Opus 5.5 | $14.00 | $1.40 |
| Claude Opus 5 | $17.50 | $1.75 |
| Claude Sonnet 5 | $7.00 | $0.70 |
API integration examples
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
This refactor moves a retry helper into a shared module. List every caller that still imports the old path, then show the import change and the test that proves nothing else broke.
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": "anthropic/claude-opus-5.5",
"messages": [
{
"role": "user",
"content": "This refactor moves a retry helper into a shared module. List every caller that still imports the old path, then show the import change and the test that proves nothing else broke."
}
],
"max_tokens": 4096
}
JSONHow to evaluate the result
The answer should be reproducible: a search that finds the stale imports, a diff, and a test run. An edit that only compiles, with no call-site inventory, is the failure this check is designed to catch.
Before you choose
Is Opus 5.5 cheaper than Opus 5 on this catalog?
Check the price table on this page rather than assuming. The two are separate catalog entries with their own rates, and the newer version number does not by itself tell you which one costs less per token.
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.