About this vendor
Vendor-level selection advice by Y-API. The per-model pages linked below carry the model-specific checks; nothing here is a measured comparison.
Where this vendor fits
The Claude entries are what the catalog’s cheaper models get compared against, but the line no longer sits wholly above them: Haiku 5.5 lists below the Flash band, and the Opus entries are the ones standing roughly an order of magnitude higher. The practical question is whether a workload measurably improves at that cost, not whether the models are capable.
What to watch for
None of the entries has a public model card to audit. Two Opus generations are listed at the same price, so the version number alone does not tell you which one earns its cost, and Haiku 4.5 lists a higher input price than the newer Haiku 5.5 on a fifth of the window.
Models on Y-API
Prices are account-credit snapshots from the Y-API catalog. Each model links to its own guide with a cost estimator and a request example.
| Model | Context window | Input / 1M tokens | Output / 1M tokens |
|---|---|---|---|
Claude Opus 5anthropic/claude-opus-5 | 1,000,000 | $5.00$0.50 | $25.00$2.50 |
Claude Opus 4.6anthropic/claude-opus-4.6 | 1,000,000 | $5.00$0.50 | $25.00$2.50 |
Claude Opus 4.7anthropic/claude-opus-4.7 | 1,000,000 | $5.00$0.50 | $25.00$2.50 |
Claude Haiku 4.5anthropic/claude-haiku-4.5 | 200,000 | $1.00$0.10 | $5.50$0.55 |
Claude Haiku 5.5anthropic/claude-haiku-5.5 | 1,000,000 | $0.15$0.015 | $0.60$0.06 |
Claude Sonnet 5anthropic/claude-sonnet-5 | 1,000,000 | $2.00$0.20 | $10.00$1.00 |
Account credit / Cash equivalent · $1 paid adds $10 of credit; the cash equivalent is credit consumed ÷ 10. These are Y-API prices, not the publisher’s list prices.
Choosing within the lineup
Default to Haiku 5.5 where volume dominates and Sonnet 5 for day-to-day pull requests and document analysis. Hold the Opus entries for second-pass reviews of consequential changes, and only after a comparison shows they catch defects Sonnet misses.
Before you choose
Do Claude entries on Y-API differ from Anthropic’s own API?
The models are Anthropic’s; the gateway is not an Anthropic endpoint. Parameter forwarding and document handling have their own compatibility boundaries, and requests must use the exact Y-API catalog IDs rather than Anthropic’s native model names.
Sources & scope
Vendor scope on this site is exactly the reviewed model guides listed above; a vendor page exists only while at least one of its models is reviewed. Claims about architecture or positioning follow the cited pages. We do not publish measured latency, uptime or benchmark scores for any vendor.