Claude Opus 5 (Fast)
Anthropic · released Jul 24, 2026
- Type
- Proprietary
- Input
- $10.00
- Output
- $50.00
- Cached
- $1.00
List price · per 1M tokens · Anthropic at 1M context · source ↗
Our take
Written Aug 3, 2026Claude Opus 5 (Fast) is Anthropic's premium hosted model for deep document analysis and complex multimodal tasks, with a one-million-token request limit that exceeds most frontier alternatives. It accepts text, images and files, but carries a steep per-token cost and no measured quality data in our records.
Pick this when you need to analyse documents or codebases near one million tokens in a single request, or when your multimodal workflow requires Anthropic's proprietary stack with a known throughput guarantee. Skip it if budget is constrained, if you need verified quality scores to justify the cost, or if a 256-thousand-token limit from a cheaper frontier model suffices.
The case for it
- One-million-token request limit — four times the 256-thousand-token ceiling common among frontier models, and 3.8 times that of Gemma 4B A4B.
- Accepts images and files alongside text for multimodal reasoning.
- Anthropic-hosted throughput is measured at 98.5 tokens per second.
The case against it
- Very high per-token cost with no measured quality advantage in our data.
- Zero benchmark scores held — no Elo, no MMLU, no coding or reasoning scores published, so there is no independent quality verification.
- Only two tracked offers, both at the same price tier, so no price competition between hosts.
How good is it?
We hold no score for this model.
We look for every model we track on every board we watch, and none of them has turned up Claude Opus 5 (Fast) — so there is no intelligence, coding, agentic or writing score to show you, not a low one, none.
Or rent it from someone else
Why this differs from the header. The strip above quotes Anthropic's own list price. This is the cheapest live offer at the widest standard context we hold, whoever is serving it — a reseller undercutting a lab is ordinary commerce, not an error.
- per 1M tokens
- $10.00 in / $50.00 out
- Context served
- 1M
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouter | $10.00 / $50.00 | 1M | not measured | Unknown | Unknown | Unknown |
| Anthropic | $10.00 / $50.00 | 1M | 105 tok/s | No | Yes30 days | Unknown |
Across the 2 listings we hold: 1 say they do not train on prompts, 0 say they do and 1 do not say. 0 appear in the zero-retention registry we check; the rest are unknown to us rather than confirmed either way.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
- ✓
- Supported
- ✗
- Not supported
- Not published
- host gave no parameter list
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouter | ✓ | ✓ | ✓ |
| Anthropic | ✓ | ✓ | ✓ |
Tool calling: 2 of 2 listings say yes. JSON output: 2 of 2 listings say yes. Strict schema: 2 of 2 listings say yes.
Models people weigh against Claude Opus 5 (Fast)
When we formed this view
Dates behind this page
Prices last checked 9d ago
What we do not know about this model yet
- No board we watch has turned up a score, 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 2 listings do not say whether they train on prompts.
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
Commercial API terms. We hold no licence record for this model, so there is nothing to summarise here.
Identifiers
- Modality record
- text+image+file->text
- Catalogue slug
- anthropic-claude-opus-5-fast