Claude Opus 4.5 API Pricing & Quick Start
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Technical specifications
Pricing comparison
BazaarLink retail price alongside AA's observed market standard.
BazaarLink price our site
Market reference Artificial Analysis
Independent benchmarks
Scores below come from Artificial Analysis, an independent third party. BazaarLink does not participate in the testing.
Top 5 — CodingCoding Index leaderboard
openai/gpt-5-6-sol-xhigh78$5 / $30openai/gpt-5-6-sol-high77$5 / $30anthropic/claude-opus-5-xhigh77$5 / $25Quick Start
Use Claude Opus 4.5 via BazaarLink API — just change the base_url:
from openai import OpenAI
client = OpenAI(
base_url="https://bazaarlink.ai/api/v1",
api_key="sk-bl-YOUR_API_KEY",
)
response = client.chat.completions.create(
model="anthropic/claude-opus-4.5",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://bazaarlink.ai/api/v1",
apiKey: "sk-bl-YOUR_API_KEY",
});
const response = await client.chat.completions.create({
model: "anthropic/claude-opus-4.5",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);Why use Claude Opus 4.5 via BazaarLink?
- ✓USD billing (TWD-quoted) + unified invoices — no foreign credit card needed for Taiwan teams
- ✓OpenAI-compatible API — zero code changes required
- ✓Automatic failover — multi-provider redundancy for the same model
- ✓Chinese-language support — local team, instant help
Frequently Asked Questions
What is Claude Opus 4.5?
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
How much does the Claude Opus 4.5 API cost?
Claude Opus 4.5 costs $5.0000 per 1M input tokens and $25.0000 per 1M output tokens when accessed through BazaarLink.
How do I use Claude Opus 4.5 with the OpenAI SDK?
Set base_url to "https://bazaarlink.ai/api/v1" and use model ID "anthropic/claude-opus-4.5". All OpenAI SDK methods (chat.completions, embeddings, streaming) work without code changes.
What is the context window for Claude Opus 4.5?
Claude Opus 4.5 supports a context window of 200,000 tokens.
Is Claude Opus 4.5 available for free?
Claude Opus 4.5 is a paid model. BazaarLink offers free trial credits on registration so you can test it without a credit card.
Relay integrity checks
- Tested endpoints
- 36 runs
- Independent hosts
- 14
- Model-family fingerprint match
- 92%
- Anomalies detected
- 12 runs
- Data range
- past 90 days
BazaarLink Probe verifies endpoints that claim to serve this model and flags behavior that differs from the reference baseline.
View the full integrity report →Related models and links
More from this provider: Anthropic