Textby Anthropic

Claude Opus 5.5

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...

  • By price it is among the most expensive of the 344 text models GenMagic runs (318th cheapest).
  • It scores 59.1 on the Artificial Analysis Intelligence Index, 1st of the 118 text models with a score.
  • Among the models GenMagic runs, it places in the top 10 on 37 of its 39 benchmarks: 1st of 173 on LMArena (Coding), 1st of 123 on Design Arena: Game Dev, 1st of 122 on Artificial Analysis Intelligence Index, and more below.
  • It was listed on Sep 22, 2026.

Data last changed Nov 7, 2026 · tracked since Oct 29, 2026 · Every model change

Try Claude Opus 5.5

Generate with Claude Opus 5.5 right here. Verify your email to start with free credits.

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Specifications

Context window

1M tokens

Max output

128K tokens

Input price

$6.00 / 1M tokens

Output price

$30.00 / 1M tokens

Cached input

$0.30 / 1M tokens

Benchmarks

How Claude Opus 5.5 scores on public benchmarks. Each card links to the benchmark explainer and to the original source.

59.1

source date 2026-11-06
Source: openrouter
AIMEMathematics

100%± 0.0

maxsource date 2026-09-22
Source: epoch
APEX-AgentsAgentic & Tool Use

73.5%

max
Source: epoch
ARC-AGI-1Reasoning & Knowledge

98.5%

high
Source: epoch
ARC-AGI-2Reasoning & Knowledge

93.3%

high
Source: epoch
Chess PuzzlesReasoning & Knowledge

67%± 4.7

maxsource date 2026-10-13
Source: epoch
Design Arena: 3DDesign & Generation

1469 Elo

Source: designarena
Design Arena: CodeDesign & Generation

1384 Elo

Source: designarena
Design Arena: SVGDesign & Generation

1319 Elo

Source: designarena
DTBenchReasoning & Knowledge

98.9%

max
Source: epoch

71.4

maxsource date 2026-09-22
Source: epoch

54.6

medium; Reasoning effort: medium; Harness: claude-code
Source: epoch

95%± 4.1

maxsource date 2026-09-22
Source: epoch

91.2%± 1.7

maxsource date 2026-09-22
Source: epoch
GPQA DiamondReasoning & Knowledge

90.2%± 0.5

source date 2026-10-31
Source: openrouter
LMArena (Coding)Instruction & Preference

1546 Elo

highsource date 2026-11-06
Source: lmarena
LMArena: Creative WritingInstruction & Preference

1532 Elo

highsource date 2026-11-06
Source: lmarena
LMArena: Hard PromptsInstruction & Preference

1532 Elo

highsource date 2026-11-06
Source: lmarena

1528 Elo

highsource date 2026-11-06
Source: lmarena
LMArena: MathMathematics

1536 Elo

highsource date 2026-11-06
Source: lmarena
LMArena: Multi-TurnInstruction & Preference

1498 Elo

highsource date 2026-11-06
Source: lmarena
LMArena (Overall)Instruction & Preference

1512 Elo

highsource date 2026-11-06
Source: lmarena
LMCAReasoning & Knowledge

68.2

max
Source: epoch

78.9

highsource date 2026-09-22
Source: epoch
Mystery Game PuzzlesReasoning & Knowledge

71%± 4.6

maxsource date 2026-09-29
Source: epoch
ProofBenchMathematics

100%

max
Source: epoch
Remote Labor IndexAgentic & Tool Use

21.3%

unknown
Source: epoch
SciCodeCoding

66.9%

max
Source: epoch
SimpleQA VerifiedReasoning & Knowledge

72.2%± 1.4

maxsource date 2026-09-22
Source: epoch
tau-bench (Airline)Agentic & Tool Use

75.3%± 1.7

source date 2026-10-31
Source: openrouter
WebDev ArenaAgentic & Tool Use

1820 Elo

max
Source: epoch

Compare against every model in the full benchmark matrix.

Capabilities

Reasoning

Works through multi-step problems before answering, for harder tasks.

Vision input

Accepts images alongside text, so you can prompt with pictures and screenshots.

Tool use

Can call functions and tools, enabling agentic and structured workflows.

Structured output

Returns validated JSON that conforms to a schema you define.

Use Claude Opus 5.5 through the API

The model id is anthropic/claude-opus-5.5. Requests bill your GenMagic balance at the price above, and each response reports what it cost.

curl
curl https://genmagic.co/api/v1/chat/completions \
  -H "Authorization: Bearer $GENMAGIC_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-opus-5.5",
    "messages": [{ "role": "user", "content": "Explain vector databases in two sentences." }]
  }'
Python (openai SDK)
from openai import OpenAI

client = OpenAI(base_url="https://genmagic.co/api/v1", api_key="YOUR_GENMAGIC_API_KEY")

resp = client.chat.completions.create(
    model="anthropic/claude-opus-5.5",
    messages=[{"role": "user", "content": "Explain vector databases in two sentences."}],
)
print(resp.choices[0].message.content)

From an AI agent, call generate_text with "model": "anthropic/claude-opus-5.5" on the GenMagic MCP server. Keys, limits and every endpoint are in the API documentation.

Use Claude Opus 5.5 in n8n

  1. In n8n, open the nodes panel, search for GenMagic and install it (a verified community node), then add it to your workflow.
  2. Set Resource to Text and Operation to Generate.
  3. In Model Name or ID, pick Anthropic: Claude Opus 5.5, or enter anthropic/claude-opus-5.5 as an expression.
  4. Connect your GenMagic API key (get one free). Each run is billed at the price above, and the node returns what it cost.

Ready-to-import workflows that already use the node are on GenMagic for n8n.

Similar-priced text models from other providers

Other text models GenMagic runs at a comparable price, on the same balance and API key.

ModelProviderPriceContext
Anthropic: Claude Opus 5.5 (this model)Anthropic$6.00 in / $30.00 out per 1M tokens1M
Meta: Muse WonderMeta$6.00 in / $30.00 out per 1M tokens1M
OpenAI: GPT-5.6 Sol ProOpenAI$6.00 in / $30.00 out per 1M tokens1.1M
Fireworks: Ember-1Fireworks$4.50 in / $22.50 out per 1M tokens1M
Perplexity: Sonar Pro SearchPerplexity$4.50 in / $22.50 out per 1M tokens200K
Sakana: Fugu Ultra v2Sakana AI$7.50 in / $45.00 out per 1M tokens1M

Compare Claude Opus 5.5

More from Anthropic

All 19 Anthropic models

Price and listing history

Every change GenMagic has recorded for Claude Opus 5.5 since it began tracking the model on Oct 29, 2026. Prices are GenMagic's, the same the studio and the API charge.

DateChangeBeforeAfter
Nov 4, 2026Updated: intelligence index--
Nov 1, 2026Price up 36%$4.40 in / $22.00 out per 1M tokens$6.00 in / $30.00 out per 1M tokens

In our guides

The guides that discuss Claude Opus 5.5 or show it in a live table.

Where these figures come from

  • Price: GenMagic's own price, what the studio and the API charge, recomputed from the provider's price list every few minutes and recorded daily. How pricing works.
  • Specs and description: as Anthropic publishes them, checked daily.
  • Benchmarks: 39 scores from Artificial Analysis and OpenRouter, Epoch AI, Design Arena, LMArena, re-read daily. Each score above links to its source.
  • Changes: the data on this page last changed on Nov 7, 2026, tracked since Oct 29, 2026. Every model's new listings, price changes and retirements are in the model changes log, and how every figure on GenMagic is sourced is on our sources page.

Generate with Claude Opus 5.5 today

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