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Anthropicclaude-opus-5-5· Verified November 10, 2026

Claude Opus 5.5 pricing and benchmarks

Anthropic’s recommended default model for most workloads, with adaptive thinking always on.

Input
$4.00
per 1M tokens
Cached input
$0.20
per 1M tokens
Output
$20.00
per 1M tokens
Capability index
166.8
#1 of 25 tracked

How capable is Claude Opus 5.5?

Claude Opus 5.5 scores 166.8 on the Epoch Capabilities Index (confidence interval 163.5–171.0), ranking #1 of the 25 rated models we track. It is a best-value pick: no cheaper model we track scores higher.

BenchmarkTestsScore
GPQA DiamondScience reasoning
90.6%
FrontierMath (Tiers 1–3)Advanced math
91.2%
SimpleQA VerifiedFactual accuracy
72.2%
ARC-AGI-2Abstract reasoning
93.3%
DeepSWECoding
—
APEX-AgentsAgentic work
73.5%

Source: Epoch AI (as “Claude Opus 5.5”), best recorded result, CC BY 4.0. A dash means no published score. Compare all models

What Claude Opus 5.5 costs in practice

WorkloadMonthly cost
Support chatbot
100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each.
$1,400
Document Q&A (RAG)
50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each.
$2,200
Coding agent
10,000 agent steps a month, ~40,000 input tokens each (70% read from the prompt cache) and ~2,000 output tokens.
$936.00
Cached chatbot
The same 100,000-reply support chatbot, but 60% of each prompt (system prompt + conversation history) is served from the prompt cache.
$1,058
Meeting notes
10,000 meetings a month summarized from ~12,000-token transcripts, ~1,000 output tokens each.
$680.00
Bulk translation
200,000 short translations a month, ~800 input and ~800 output tokens each.
$3,840
Content moderation
1,000,000 classifications a month, ~400 input tokens and ~80 output tokens each.
$3,200
Article drafting
300 long-form articles a month written from a ~4,000-token brief and outline, ~5,000 output tokens each.
$34.80
Code review bot
30,000 pull-request reviews a month, ~5,000 input tokens each (30% cached repository context) and ~700 output tokens.
$849.00
Invoice extraction
100,000 documents a month parsed into structured JSON, ~1,200 input and ~250 output tokens each.
$980.00

Pricing details

  • Cache reads cost 5% of the input price, against 10% on Claude Opus 5 and Sonnet 5.
  • Cache writes cost $5 (5-minute cache) or $8 (1-hour cache) per 1M tokens.
  • Fast mode costs $8 input / $40 output per 1M tokens.
  • US-only inference (inference_geo: "us") costs 1.1x.
Interactive Estimator

Estimate your Claude Opus 5.5 bill

Standard-tier list prices. Long-context rates apply automatically where the provider publishes a threshold. Excludes cache-write surcharges, taxes, batch and volume discounts.

Claude Opus 5.5 pricing FAQs

When was Claude Opus 5.5 released?
Anthropic released Claude Opus 5.5 on September 22, 2026. Its API ID is claude-opus-5-5, at $4.00 input / $20.00 output per 1M tokens.
How much does Claude Opus 5.5 cost per 1M tokens?
Claude Opus 5.5 costs $4.00 per 1M input tokens and $20.00 per 1M output tokens, and $0.20 per 1M cached input tokens on Anthropic’s standard tier.. Cached input tokens cost $0.20 per 1M.
What is Claude Opus 5.5’s context window?
You can prompt Claude Opus 5.5 with up to 1M tokens. It can generate up to 128K tokens per response.
Does Claude Opus 5.5 have a batch API discount?
Yes. Asynchronous batch jobs cost 50% less: $2.00 input / $10.00 per 1M tokens.
How does Claude Opus 5.5’s price compare with other AI models?
Sorted by blended price (3 input : 1 output), Claude Opus 5.5 is #24 of the 27 models we track, at $8.00 per 1M tokens blended. It is a best-value pick: no cheaper tracked model scores higher on the Epoch Capabilities Index.
How capable is Claude Opus 5.5?
Epoch AI rates Claude Opus 5.5 at 166.8 on its Capabilities Index — rank #1 of 25 rated models, with a confidence interval of 163.5–171.0.