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Anthropic: Claude Opus 4.8
DEVELOPED BY: Anthropic • LAST UPDATED: 9/1/2026
CCI (Capability)52.2Consensus: N/A
Context Window1.0MMax token length
In/Out Pricing$5/$25Blended cost/1M: $10.00
Pulse (Popularity)57/100Adoption + discussion proxy
Model Description
OpenRouter model gateway for Anthropic: Claude Opus 4.8.
Domain Averages
Reasoning56.6%
Coding48.1%
Math33.5%
Preference70.6%
Jury & Benchmark Signals
| Source / Harness | Score |
|---|---|
| GPQA-Diamond | 55% |
| Humanity's Last Exam | 51% |
| MMLU-Pro | 80% |
| SWE-bench Verified | 35% |
| LiveCodeBench | 40% |
| AIME | 38% |
| LMArena style-controlled Elo | 1240 |
Supported Modalities
INPUT:
text
OUTPUT:
text
Search Tags
#text#reasoning#creative
How to Use This Model
Python SDK Integration:
import openai
client = openai.OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_OPENROUTER_KEY"
)
response = client.chat.completions.create(
model="anthropic/claude-opus-4.8",
messages=[
{"role": "user", "content": "Explain quantum entanglement in 1 sentence."}
]
)cURL Terminal Request:
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-opus-4.8",
"messages": [
{"role": "user", "content": "Hello!"}
]
}'Community Debates & Mentions (0)
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