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Claude Opus 5 vs Claude Opus 5.5

Compare Claude Opus 5 from Anthropic and Claude Opus 5.5 from Anthropic on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

AnthropicClaude Opus 5AnthropicClaude Opus 5.5
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Anthropic logo
Claude Opus 5
Anthropic · text, image, pdf → text

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. The model maintains strong instruction following and tool use across extended tasks, while remaining effective at lower effort settings for workloads that prioritize latency and token efficiency.

Input$5 /M
Output$25 /M
Cache read$0.5 /M
Details
Anthropic logo
Claude Opus 5.5
Anthropic · text, image, pdf → text

Claude Opus 5.5 is Anthropic’s latest flagship model. In Anthropic’s comprehensive alignment testing, Opus 5.5 is the strongest-performing model tested to date. It also includes the safety safeguards Anthropic has developed for its most capable models.

Input$4 /M
Output$20 /M
Cache read$0.2 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Claude Opus 5
Claude Opus 5.5
Input /M
$5
$4
Output /M
$25
$20
Cache read /M
$0.5
$0.2
Context length
1,000,000
1,000,000
Max output
128,000
128,000
Time to First Token
1.1 s
3.2 s
Throughput
77.1 tok/s
83.5 tok/s
Modalities
textimagepdf
textimagepdf
Supported Parameters
thinkingtoolsstructured outputslong contextweb
API Formats
chat_completions · claude_api · responses
Released
July 24, 2026
September 23, 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

claude-opus-5claude-opus-5-5

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

claude-opus-5claude-opus-5-5

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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Cost calculator

Estimate your monthly bill for the same workload on each model.

Claude Opus 5.5
$540 /mo
Claude Opus 5
$675 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Claude Opus 5, Claude Opus 5.5?

Claude Opus 5.5: $20/M output tokens; Claude Opus 5: $25/M. Use the cost calculator above to estimate your own workload.

Which responds faster?

Claude Opus 5: 1.1s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Claude Opus 5 accepts 1,000,000 and Claude Opus 5.5 accepts 1,000,000 input tokens. Maximum output per request is 128,000 tokens on Claude Opus 5 and 128,000 tokens on Claude Opus 5.5.

Which one generates tokens faster?

Claude Opus 5.5 at 83.5 tok/s and Claude Opus 5 at 77.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Claude Opus 5 accepts text, image and PDF input and supports thinking, tool calling, structured outputs, long context and web search; Claude Opus 5.5 accepts text, image and PDF input.

Can I call Claude Opus 5 and Claude Opus 5.5 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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