Anthropic
Claude Haiku 5.5
claude-haiku-5.5
Total Context
1M
Max Output
128K
Released
N/A
Input$0.1 / M tokens
Output$0.5 / M tokens
Claude Opus 5 Fast
claude-opus-5-fastFast-mode variant of Opus 5 - identical capabilities with higher output speed at 2x pricing relative to regular Opus 5. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Context Window
1M tokens
Maximum Output
128K tokens
Release Date
Jul 24, 2026
Modalities
Claude Opus 5 Fast Pricing
| Input Price | Output Price | Cache Read |
|---|---|---|
| $10/M | $50/M | $1/M |
Claude Opus 5 Fast API Capabilities
Reasoning
Supported
Tool calling
Supported
Temperature parameter
Not supported
Attachments
Supported
Knowledge Base
2026-05-01
Endpoint Protocols
Completions APIMessages API
Claude Opus 5 Fast Model Highlights
Claude Opus 5 Fast runs the same Claude Opus 5 model with accelerated output while preserving its reasoning, coding, vision and long-context capabilities.
Accelerated Output
Fast mode can deliver up to 2.5 times more output tokens per second, reducing generation time for lengthy responses.
Same Model Intelligence
The accelerated configuration uses the same weights and behavior as standard Claude Opus 5 rather than a smaller or separate model.
Deep Long-Context Reasoning
Fast mode retains Opus 5’s default thinking and one-million-token context for complex coding and professional analysis.
Claude Opus 5 Fast Use Cases
Claude Opus 5 Fast is suited to interactive coding, rapid code review and time-sensitive professional analysis that still requires Opus 5 capability.
Interactive Coding Sessions
Iterate on implementations, refactors and debugging steps with faster generation of detailed code and explanations.
Rapid Code Review
Review substantial changes and return detailed defect findings more quickly during active development and release preparation.
Time-Sensitive Analysis
Process large professional documents and produce thorough recommendations when lengthy output must be delivered with shorter generation time.
How to Use Claude Opus 5 Fast via the TokenHub API
import OpenAI from "openai"
const client = new OpenAI({
apiKey: process.env.TOKENHUB_API_KEY,
baseURL: "https://us-api.tokenhub.com/v1",
})
const result = await client.chat.completions.create({})
console.log(result.choices[0]?.message?.content)Claude Opus 5 Fast Benchmarks
| Index score | ||
|---|---|---|
| Artificial Analysis Intelligence Index | Artificial Analysis broad capability aggregate | 60.7 |
| Artificial Analysis Coding Index | Artificial Analysis software task aggregate | 78 |
| Knowledge & Reasoning | ||
| GPQA | Advanced science problem solving | 93.2% |
| HLE | Broad expert-level exam set | 52.6% |
| Coding & Engineering | ||
| SciCode | Scientific coding challenges | 55.7% |
| Instruction Following & Agent Tasks | ||
| AA-LCR | Long-context reasoning | 70% |
Metrics sourced from Artificial Analysis
Claude Opus 5 Fast Guides & Articles
claude-opus-5-fast FAQs
Useful questions about using claude-opus-5-fast on TokenHub.
What is claude-opus-5-fast?+
claude-opus-5-fast is TokenHub’s fast-mode entry for Claude Opus 5. Anthropic describes fast mode as the same model and capabilities with a faster inference configuration, not a separate intelligence model.
What is claude-opus-5-fast best used for?+
It is useful for interactive coding agents, live analysis, streaming responses, and other Opus-quality workflows where faster output generation improves the user experience.
How much faster is the fast mode?+
Anthropic states that fast mode can provide up to 2.5 times more output tokens per second. The gain focuses on output generation speed, not necessarily time to the first token.
What limitations or tradeoffs does fast mode have?+
Fast mode is a research preview with premium pricing and dedicated capacity limits. Availability can be restricted, and it does not make every request start sooner; important outputs still require review.
How do I use claude-opus-5-fast through TokenHub?+
If the alias is available to your account, select claude-opus-5-fast in the TokenHub API request and use your TokenHub endpoint and credentials. Confirm current parameters, quotas, and routing on the live model page.
How is fast mode priced and when should I choose it?+
Anthropic lists fast mode at $10 per million input tokens and $50 per million output tokens. Choose it when output latency materially affects the experience; choose standard Opus 5 when lower cost matters more. TokenHub pricing may differ.
Ready to use Claude Opus 5 Fast?
Use one API key to access Claude Opus 5 Fast and more AI models through TokenHub.
Claude-opus-5-fast Media and Demos
Verified public posts, discussions, and videos about Claude Opus 5 and its fast mode.
X (Twitter)
Claude ·
Introducing Claude Opus 5. It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price. https://t.co/GQWhcq2CQL
https://pbs.twimg.com/media/HOAifjuWcAESshR.jpgView originalClaude ·
On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art: https://t.co/Cl3fDxM0gP
https://pbs.twimg.com/media/HOAffmCWsAA1D_X.pngView originalClaude ·
Opus 5 is available today on all paid plans and the Claude API, priced the same as Opus 4.8. It’s the default model on Claude Max, and the strongest on Claude Pro. It’s also offered in Fast mode, which runs around 2.5× the default speed. Read more: https://www.anthropic.com/news/claude-opus-5
View originalReddit
Introducing Claude Opus 5
ClaudeOfficial ·
View originalIntroducing Claude Opus 5
ClaudeOfficial ·
View originalClaude Opus 5 takes second place on SimpleBench
Balance- ·
View originalYouTube
What did Anthropic do?! (Opus 5)
Matthew Berman
View originalWe Tested Claude Opus 5. It’s Frustrating With Flashes of Brilliance.
Every
View originalClaude Opus 5 is INSANE at Game Development
RandomAI
View original