Claude Opus Latest
Anthropic · released Apr 21, 2026
- Type
- Closed
- Input
- None held
- Output
- None held
- Cached
- None held
We don't hold a list price for this model yet · hosted only — we have no record of published weights
Our take
Written Aug 2, 2026Claude Opus Latest is Anthropic's flagship hosted-only model, released in April 2026, that can handle up to one million tokens in a single request and accepts text, images and files. It is positioned for deep analysis of long documents and complex multimodal inputs where output quality is expected to justify a premium price.
Choose this for book-length documents, large codebases or extended transcripts in a single prompt, or for multimodal analysis combining images, documents and text. Skip it if your budget cannot accommodate premium per-token pricing, or if you need validated benchmark scores.
The case for it
- One-million-token request limit, the highest figure we hold for this model.
- Accepts text, images and files together in a single prompt.
The case against it
- Premium per-token pricing with no cheaper tier or provider alternative available in our data.
- No benchmark scores, Elo ratings, or task-specific accuracy results in our data.
- Throughput and latency are unmeasured in our data.
How good is it?
We hold no score for this model.
So there is no figure here for everyday use, coding, agent work or writing. That is a gap in our data, not a low score.
Where to rent it
Prices checked 2 hours ago
- per 1M tokens
- $4.00 in / $20.00 out
- Context served
- 1M
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouterOpenRouter's own listing | $4.00 / $20.00checked 2 hours ago | 1M | not measured | Unknown | Unknown | Unknown |
Across the 1 listings we hold: 0 say they do not train on prompts, 0 say they do and 1 does not say. 0 appear in the zero-retention registry we check; the rest are unknown to us.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouterOpenRouter's own listing | ✓ | ✓ | ✓ |
Tool calling: 1 of 1 listings says yes. JSON output: 1 of 1 listings says yes. Strict schema: 1 of 1 listings says yes.
When we formed this view
Recent changes
What moved
first indexed by our pipelineEach date is the day we first saw the change, or the day the maker announced it.
What we do not know about this model yet
- No independent board has scored it, so we hold no quality figures at all.
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 1 listings does not say whether it trains on prompts.
- We don't hold a list price for this model yet — the gap is ours, not the lab's.
- We hold no batch or off-peak rate for any of its listings.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
We hold no licence record for this model, and no record of published weights either — so we can neither summarise its terms nor point you at the weights.
Identifiers
- Takes in, gives back
- Text, images and documents in, text out
- Catalogue slug
- anthropic-claude-opus-latest