Anthropic: Claude Opus 5

Name: Claude Opus 5
Brand: Anthropic
Price: 1.35 USD
Availability: InStock

Claude Opus 5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, released 2026-07. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, and coordinating parallel subagents. The model maintains strong instruction following and tool use across extended tasks while remaining effective at lower effort settings for latency-sensitive workloads.

Modalities

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Price / 1M−73%

$1.35 / $6.75~~$5.00 / $25.00~~

Context

Knowledge cutoff

—

Capabilities

ReasoningVisionTool useLong contextPrompt cachingStructured output

Channels

Same weights on every channel. Requests route to the cheapest healthy one; the channel used is printed on each billing line.

Provider

Discount

Input /M

Output /M

Cache Read /M

Cache Create 5m /M

Cache Create 1h /M

Codecheap

−73%

$1.35

$6.75

$0.13

—

Defaultstable

−19%

$4.05

$20.25

$0.41

—

Cost Calculator

Pick a channel and a usage scenario, then drag to your workload — each scenario assumes a different prompt-cache hit rate.

Channel

Scenario

Input tokens / request1,600Output tokens / request800Requests / month60,000

Unit $1.35 / $6.75 /1MDaily chat: 40% cache hit assumed · cache read $0.13 /1M

List price ~~$1507.20~~On MirAPI$406.94/ moYou save $1100.26Create an API key

Benchmarks

bar = score (0–100) · ▏ median

Scores from vendor reports and public leaderboards. No private evals.

Intelligence Index

General ability

63.1

Coding Index

Code

78.0

Agentic Index

Agentic

59.2

GPQA Diamond

Science QA

88.4

#15

τ-bench (airline)

Agentic tool use

80.4

Showcase

Three fixed prompts, identical for every chat model. Outputs are archived verbatim — copy the prompt to reproduce.

Task prompt · identical for all models

Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.

Run in Playground

Archived output

Archive not published yet

Every model will run this exact prompt; the output lands here verbatim, with tokens and per-run cost.

Quick Start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="anthropic/claude-opus-5",
    messages=[{"role": "user", "content": "Hello"}],
)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.mirapi.ai/v1",  // changed
  apiKey: process.env.MIRAPI_API_KEY,      // changed
});

const res = await client.chat.completions.create({
  model: "anthropic/claude-opus-5",
  messages: [{ role: "user", content: "Hello" }],
});

curl https://api.mirapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $MIRAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-opus-5",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

# ~/.zshrc
export ANTHROPIC_BASE_URL="https://api.mirapi.ai"
export ANTHROPIC_AUTH_TOKEN="$MIRAPI_API_KEY"

# start as usual — model names unchanged
claude --model anthropic/claude-opus-5

# ~/.codex/config.toml
model_provider = "mirapi"
model = "anthropic/claude-opus-5"

[model_providers.mirapi]
name = "MirAPI"
base_url = "https://api.mirapi.ai/v1"
env_key = "MIRAPI_API_KEY"
wire_api = "responses"

Links

anthropic.com www.mirapi.ai

Wire Claude Opus 5 into your product

1M free tokens to start · no card · OpenAI-compatible, one base_url change

Start free