Google Agent Platform

Claude Opus 5

claude-opus-5

Strongest Claude Opus model for coding, agents, and professional work

VisionTool CallingCachingReasoningWeb
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Quick facts

Released
July 2026
Model type
Proprietary
Model family
Claude Opus
Input modalities
Supports: Text, Image, PDF
Output modalities
Supports: Text
Available regions
USEUGlobal
Zero data retention
Yes
Available on nexos.ai
Yes

Pricing and specifications of Claude Opus 5

Explore Claude Opus 5 pricing per million input, output, and cached tokens, along with its context window and maximum output limits.

Input / 1MOutput / 1MCached input / 1MContextMax output
$5.00$25.00$0.501M128K

Available providers

Provider Region Input / 1M Output / 1M Cache / 1M ZDR
Google Agent Platform EU $5.50 $27.50 $0.55
Google Agent Platform US $5.50 $27.50 $0.55
Google Agent Platform Global $5.00 $25.00 $0.50

Specifications

Context window

1M tokens

Max output

128K tokens

Input

Output

Benchmarks of Claude Opus 5

How Claude Opus 5 scores on independent benchmarks tracked by Epoch AI.

Quality

Epoch Capabilities Index

164.5

ECI rank

#8 of 271

GPQA Diamond

Graduate-level scientific reasoning

95.7%

ARC-AGI-2

Abstract reasoning on novel puzzles

90.4%

FrontierMath

Expert-level mathematics

90.1%

OTIS Mock AIME

Competition mathematics

98.9%

WeirdML

Novel machine-learning tasks

91.8%

APEX-Agents

Long-horizon professional services tasks

65.8%

OSWorld 2.0

Computer use on real desktops

31.4%

SimpleQA Verified

Short-form factual accuracy

59.9%

Benchmark data: Epoch AI, ‘Capabilities & benchmarking’ , licensed under CC BY 4.0 .

Quickstart

Start using Claude Opus 5

Model ID

claude-opus-5

Base URL

https://api.nexos.ai/v1

Code

 
from openai import OpenAI

# Get your API key from the nexos.ai dashboard
client = OpenAI(
    base_url="https://api.nexos.ai/v1",
    api_key="YOUR_NEXOS_API_KEY",
)

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

print(response.choices[0].message.content)
import OpenAI from 'openai';

// Get your API key from the nexos.ai dashboard
const client = new OpenAI({
  baseURL: 'https://api.nexos.ai/v1',
  apiKey: 'YOUR_NEXOS_API_KEY',
});

const response = await client.chat.completions.create({
  model: 'claude-opus-5',
  messages: [{ role: 'user', content: 'Hello!' }],
});

console.log(response.choices[0].message.content);
curl https://api.nexos.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_NEXOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Other Anthropic models

Models from Anthropic with comparable capabilities and pricing.

ModelInputOutputContextCapabilitiesRegion
Claude Fable 5.1$11.00$55.00872K
VisionToolsCacheThinkWeb
USEUGlobal
Claude Opus 5.5$4.40$22.001M
VisionToolsCacheThinkWeb
USEUGlobal
Claude Sonnet 5.5$2.20$11.00872K
VisionToolsCacheThinkWeb
USEUGlobal

Start building with Claude Opus 5

Access Claude Opus 5 and 200+ other AI models through nexos.ai.

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FAQ

Common questions about Claude Opus 5, its availability and usage.