Claude Opus 5 (Fast)
Claude Opus 5 (Fast) runs Claude Opus 5 in Anthropic's fast mode, a request configuration that allocates more compute for quicker output. Identical model, identical quality, at premium pricing.
- Input and output price
- Input $10, Output $50, Per 1M tokens
- 24h uptime
- Loading AI Gateway uptimeBase model
import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-opus-5-fast', prompt: 'Why is the sky blue?'})Copy link to headingProviders
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
Copy link to headingPlayground
Try out Claude Opus 5 (Fast) by Anthropic. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
Claude Opus 5 (Fast)
Claude Opus 5 (Fast)
Copy link to headingUptime24 hours
Direct request success rate on AI Gateway and per-provider. Uptime reflects the base model. Visit the docs for more info.
Copy link to headingThroughput24 hours
P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the docs for more info.
Copy link to headingLatency24 hours
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.
Copy link to headingMore models by Anthropic
| Model |
|---|
| 1M | 3.2 s | 101 tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 |  +1 | 07/24/2026 | |||||
| 1M | 1.9 s | 118 tps | $2/M | $10/M | Read:$0.20/M Write: $2.50/M+1 more | $10/K + input costs | +3 | +1 | 06/29/2026 | |||||
| 1M | 1.2 s | 103 tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 | +1 | 05/28/2026 | |||||
| 1M | 1.0 s | 65 tps | $3/M | $15/M | Read:$0.30/M Write: $3.75/M+1 more | $10/K + input costs | +3 | +1 | 02/17/2026 | |||||
| 1M | 1.3 s | 49 tps | $5/MFast $30/M | $25/MFast $150/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 |  | 02/05/2026 | |||||
| 200K | 0.5 s | 108 tps | $1/M | $5/M | Read:$0.10/M Write: $1.25/M+1 more | $10/K + input costs | +3 | +1 | 10/15/2025 |
Copy link to headingAbout Claude Opus 5 (Fast)
Claude Opus 5 (Fast) is Claude Opus 5 served in Anthropic's fast mode. Fast mode is not a different model and not a smaller one: it is a configuration of the same model that allocates more compute per request, so responses arrive sooner at identical quality and with identical capabilities.
On Anthropic's own API you opt in per request with a speed setting and a beta header, and the response reports which tier served it. Through AI Gateway you select it by model id instead, calling anthropic/claude-opus-5-fast directly.
Everything that defines Claude Opus 5 carries over, including the 1M tokens context window, reasoning on by default with configurable effort, tool calling, structured output, and streaming. AI Gateway publishes live latency and throughput metrics on this page, so you can compare against the standard model rather than working from a quoted multiplier.
Interactive work is where this earns its price. Rapid iteration, live debugging, and agent loops that chain many calls all shorten at every step, and the saving accumulates across a run. A single background completion rarely justifies it.
You can integrate Claude Opus 5 (Fast) through AI SDK, Chat Completions API, Responses API, Messages API, or other API formats, from TypeScript or Python.
Copy link to headingWhat To Consider When Choosing a Provider
- Configuration: Fast mode is a research preview with gated access, so confirm your account can reach it before you design around it. It also carries a rate limit separate from the standard model's. Exceeding that limit returns a 429 with a retry-after header, and because the limit replenishes continuously the wait is usually short, but your retry logic should still handle it.
- Configuration: Provider coverage is narrower than Claude Opus 5, and not for the usual reason. Fast mode is served through Anthropic's own API rather than the cloud resellers, so the providers listed on this page will be a shorter set than the standard model's.
- Configuration: Pricing is a premium over Claude Opus 5 and the multiplier applies across the whole context window, including requests past 200K input tokens. It also stacks with prompt caching and data residency multipliers, so the effective rate compounds rather than replacing them. Check the pricing panel on this page before moving a workload across.
- Configuration: Quality is not a reason to choose Claude Opus 5 (Fast). The model is the same, so a prompt that answers poorly on Claude Opus 5 answers the same way here, only sooner. Change models rather than speed when the output is the problem.
- Zero Data Retention: Zero Data Retention is available for this model. It is offered on a per-provider and model basis. See the documentation for details.
- Authentication: AI Gateway authenticates requests using an API key or OIDC token. You do not need to manage provider credentials directly.
Copy link to headingWhen to Use Claude Opus 5 (Fast)
Best for
- Rapid Iteration: Responses a developer waits on directly
- Live Debugging: Interactive surfaces that stall on a standard response
- Long Tool-Call Chains: Runs where a saving on every call accumulates
- Unchanged Output Quality: Claude Opus 5 behaviour delivered sooner
Consider alternatives when
- Batch And Background Work: Claude Opus 5 costs less when nobody is waiting
- Cost-Driven Workloads: The premium applies across the full context window
- Quality Problems: The same model returns the same answer, only sooner
- Cloud Provider Routing: Fast mode is served through Anthropic's own API
Copy link to headingConclusion
Claude Opus 5 (Fast) is Claude Opus 5 with more compute allocated per request, which buys latency rather than capability. Point anthropic/claude-opus-5-fast at AI Gateway when someone is waiting on each step, and keep batch work on Claude Opus 5, where the premium buys nothing a user would notice.
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