Claude Opus 5 by Anthropic — Pricing, Benchmarks & Real Outputs
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Compare Claude Opus 5
Alternatives to Claude Opus 5
Claude Opus 5 is good. These would like a word anyway.
Claude Opus 5 is good. These would like a word anyway.
Claude Opus 5 is good. These would like a word anyway.
Claude Opus 5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents. It holds instruction following and tool use steady across extended tasks while staying effective at lower effort settings when latency and token efficiency matter.
fromimport openai OpenAI
client = OpenAI(
"https://openrouter.ai/api/v1" base_url=,
"$OPENROUTER_API_KEY" api_key=,
)
response = client.chat.completions.create(
"anthropic/claude-opus-5" model=,
"role""user""content""Hello!" messages=[{: , : }],
)
print(response.choices[0].message.content)Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.
Takes contested questions head-on rather than retreating into refusal, and says so explicitly: a moral view that cannot state its own priority ordering under pressure is a taboo, not a view. Pairs a firm answer with an audit of why the question was asked, and volunteers its own limits (not a lawyer, introspection is weak evidence) without hiding behind them.
Leads with a bottom line, then shows the work that supports it and the conditions that would overturn it. Tests its own conclusion against the frameworks that might reject it rather than stacking evidence for one side, and names the rhetorical setup when a question is built as a trap. Concedes the strong version of the counterargument out loud, then explains why it still lands where it lands.
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
53 outputs · $24.70 tracked across 53 receipts
Claude Opus 5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents. It holds instruction following and tool use steady across extended tasks while staying effective at lower effort settings when latency and token efficiency matter.
fromimport openai OpenAI
client = OpenAI(
"https://openrouter.ai/api/v1" base_url=,
"$OPENROUTER_API_KEY" api_key=,
)
response = client.chat.completions.create(
"anthropic/claude-opus-5" model=,
"role""user""content""Hello!" messages=[{: , : }],
)
print(response.choices[0].message.content)Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.
Takes contested questions head-on rather than retreating into refusal, and says so explicitly: a moral view that cannot state its own priority ordering under pressure is a taboo, not a view. Pairs a firm answer with an audit of why the question was asked, and volunteers its own limits (not a lawyer, introspection is weak evidence) without hiding behind them.
Leads with a bottom line, then shows the work that supports it and the conditions that would overturn it. Tests its own conclusion against the frameworks that might reject it rather than stacking evidence for one side, and names the rhetorical setup when a question is built as a trap. Concedes the strong version of the counterargument out loud, then explains why it still lands where it lands.
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
53 outputs · $24.70 tracked across 53 receipts