Last refreshed 2026-05-28. Next refresh: weekly.
Why use Claude Opus 4.8 on Anthropic?
Anthropic offers Claude Opus 4.8 with pay-as-you-go pricing at $5.00/1M input tokens. Anthropic is a safety-focused AI research company and creator of the Claude model family, offering API access through the Anthropic Console for text generation, analysis, and coding tasks.
Compare Claude Opus 4.8 across 7 providers to find the best fit for your use caseSetup recipe
Python + curlpip install anthropicexport ANTHROPIC_API_KEY=...import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-opus-4-8",claude-opus-4-8Request example
import anthropic
client = anthropic.Anthropic() # reads ANTHROPIC_API_KEY from env
message = client.messages.create(
model="claude-opus-4-8",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}]
)
print(message.content[0].text)Gotchas
- Use the versioned model ID, e.g. "claude-sonnet-4-6" or "claude-opus-4-7-20251101".
- The examples expect ANTHROPIC_API_KEY; rename it only if your application config maps the new variable.
Compare Claude Opus 4.8 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Anthropic | $5.00 | $25.00 |
| AWS Bedrock | $5.00 | $25.00 |
| GCP Vertex AI | $5.00 | $25.00 |
| Microsoft Foundry | $5.00 | $25.00 |
| OpenRouter | $5.00 | $25.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $5.00 |
| Output tokens | $25.00 |
| Query | $10.00 |
Capabilities
About Claude Opus 4.8
Claude Opus 4.8 is Anthropic's most capable generally-available model for complex reasoning, long-horizon agentic coding, and high-autonomy work. It improves on Opus 4.7 across agentic coding (SWE-bench Pro 69.2% vs 64.3%), agentic terminal coding (Terminal-Bench 2.1 74.6% vs 66.1%), multidisciplinary reasoning (HLE 57.9% with tools vs 54.7%), and agentic computer use (OSWorld-Verified 83.4%). Features a 1M-token context window (200k on Microsoft Foundry), 128k max output tokens, adaptive thinking with effort control defaulting to high, computer use, and a fast mode at 2.5× speed ($10/$50 per MTok). Approximately 4× less likely than Opus 4.7 to leave undetected code flaws. Deprecated Claude Opus 4 and Claude Sonnet 4 should migrate to Claude Opus 4.8.
FAQ
What does Claude Opus 4.8 cost on Anthropic?
On Anthropic, Claude Opus 4.8 costs $5.00 per 1M input tokens and $25.00 per 1M output tokens.
What is the context window for Claude Opus 4.8 on Anthropic?
Claude Opus 4.8 supports a 1m token context window on Anthropic.
How does Anthropic compare to other Claude Opus 4.8 providers?
Claude Opus 4.8 is available from 7 providers. The cheapest input pricing is $5.00/1M tokens from Anthropic.
What API model ID do I use for Claude Opus 4.8 on Anthropic?
Use the model ID claude-opus-4-8 when calling Anthropic's API.
Who created Claude Opus 4.8?
Claude Opus 4.8 was created by Anthropic as part of the Claude 4.8 model family.
Is Claude Opus 4.8 open source?
Claude Opus 4.8 is not open source; the seed data lists it as proprietary.