Claude Opus 5
$5/Mtok inThe Claude 5 generation's deep-work model, maximum-capability reasoning for research, architecture, and hard agentic tasks.
Playground
Try it in the browser
Facts
At a glance
Availability
Live
Pricing
$5 / M input · $25 / M output
Endpoint
Chat Completions
/v1/chat/completions
Context window
200k tokens
API
Call it from code
import OpenAI from "openai"
const client = new OpenAI({
baseURL: "https://api.companyfabric.com/v1",
apiKey: process.env.COMPANYFABRIC_API_KEY,
})
const res = await client.chat.completions.create({
model: "anthropic/claude-opus-5",
max_tokens: 1024,
temperature: 0.7,
messages: [{ role: "user", content: "Say hello from the fabric." }],
})
console.log(res.choices[0].message.content)FAQ
Frequently asked questions
How much does Claude Opus 5 cost?
$5 / M input · $25 / M output. The exact cost of each call is shown before you run it and metered to your prepaid balance, no subscription required.
Why use Claude Opus 5 on CompanyFabric instead of going direct?
One key and one balance across every model in the library, at pricing at parity with or below the direct API. Switching models is a one-line change.
Is Claude Opus 5 available through the OpenAI SDK?
Yes, point any OpenAI SDK at api.companyfabric.com/v1 and set model to "anthropic/claude-opus-5".
Variants
Same family
Claude Sonnet 4.5
RetiringAnthropic
Frontier-quality text and reasoning through one OpenAI-compatible endpoint.
Added 1 Jun 2026 · text
Claude Haiku 4.5
$1/Mtok inAnthropic
Fast, cheap frontier-family model for high-volume tasks.
Added 1 Jun 2026 · text
Claude Opus 4.6
$5/Mtok inAnthropic
The frontier tier for the hardest reasoning and agentic work.
Added 1 Jun 2026 · text
Claude Fable 5
$10/Mtok inAnthropic
Anthropic's first Mythos-class model, the new flagship tier above Opus, tuned for the hardest reasoning and agentic work.
Added 5 Aug 2026 · text
Claude Opus 5.5
$4/Mtok inAnthropic
First of the Claude 5.5 generation: Fable-class agentic coding and computer use at 20% below Opus 5.
Added 22 Sep 2026 · text
Claude Sonnet 5.5
$2/Mtok inAnthropic
The fast Claude 5.5: near-Opus coding and knowledge work, 30%+ faster than Sonnet 5, at half Opus 5.5's price.
Added 28 Sep 2026 · text
Claude Fable 5.1
$10/Mtok inAnthropic
Anthropic's top generally available model, tied for first on the Artificial Analysis Intelligence Index.
Added 1 Sep 2026 · text
Claude Haiku 5.5
$0.1/Mtok inAnthropic
Anthropic's cheapest and fastest Claude: a big step up from Haiku 4.5 in coding, computer use and knowledge work, at $0.10 / $0.50 per 1M tokens for prompts up to 100K.
Added 7 Oct 2026 · text
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Run Claude Opus 5 with free starter credits. Free starter credits included, no subscription required.