Enterprise DNAEnterprise DNA
Anthropic logo

Models · Reasoning

Claude Opus 5.5

by Anthropic

Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.

Visit Anthropic ↗

Our verdict

Not reviewed yet

We have not reviewed Claude Opus 5.5 yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About 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.

Best for

Complex repository changes

Notes

Claude Opus 5.5 is listed in the EDNA Models directory from the OpenRouter catalogue.

Pros

  • Cross-file refactors with a written plan
  • text, image, file input; text output on the listed OpenRouter route

Cons

  • Routine label extraction where a smaller model meets the same checks
  • Unsupervised repository writes without tests
  • Base text-token rates exclude other modalities, tools, caching, retries and any hosting-specific charges. Check actual usage before comparing cost per successful task.

Key facts

What we have checked

Input price
$4.00 per million tokens
Checked OpenRouter models API
Output price
$20.00 per million tokens
Checked OpenRouter models API
Price on amazon-bedrock
$0.200 per million cached input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$4.00 per million input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$20.00 per million output tokens
Checked OpenRouter models API
Price on anthropic
$0.200 per million cached input tokens
Checked OpenRouter models API
Price on anthropic
$4.00 per million input tokens
Checked OpenRouter models API
Price on anthropic
$20.00 per million output tokens
Checked OpenRouter models API
Price on azure
$0.200 per million cached input tokens
Checked OpenRouter models API
Gpqa diamond
90.6% (for 22 Sept 2026)
Checked Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private
91.2% (for 22 Sept 2026)
Checked Epoch AI (CC BY 4.0)
Simpleqa verified
72.2% (for 22 Sept 2026)
Checked Epoch AI (CC BY 4.0)

Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.

API access

How to call it

Call via OpenRouter with model id `anthropic/claude-opus-5.5`.

  • openrouter · anthropic/claude-opus-5.5 · Docs

OpenRouter id: anthropic/claude-opus-5.5

Price

What Claude Opus 5.5 costs, over time

Input price

$4.00 to $4.00

US dollars per million input tokens. 24 Sept 2026 to 7 Nov 2026, 34 days.

Source: OpenRouter models API. Checked .

Output price

$20.00 to $20.00

US dollars per million output tokens. 24 Sept 2026 to 7 Nov 2026, 34 days.

Source: OpenRouter models API. Checked .

Prices by host

HostPriceOver timeChecked
amazon-bedrockCached input$0.200 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockInput$4.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockOutput$20.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicCached input$0.200 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicInput$4.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicOutput$20.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureCached input$0.200 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureInput$4.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureOutput$20.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsCached input$0.200 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsInput$4.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsOutput$20.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexCached input$0.200 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexInput$4.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexOutput$20.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API

Usage

How much Claude Opus 5.5 is used

Tokens served a day

27.6B to 766.6B

tokens a day on OpenRouter. 22 Sept 2026 to 7 Nov 2026, 47 readings.

Source: OpenRouter model activity (741 of 741 series). Checked .

Scores

How Claude Opus 5.5 scores

Each score comes from the named source and shows when we last confirmed it. A flag means the score needs care.

ScoreValueSourceChecked
Artificial Analysis Intelligence Index59.1indexAs of 7 Nov 2026Artificial Analysis via OpenRouter
LMArena text rating (Elo)1,512EloAs of 7 Nov 2026LMArena (CC-BY-4.0), published 2026-11-06
LMArena web development rating (Elo)1,814EloAs of 7 Nov 2026LMArena (CC-BY-4.0), published 2026-11-06
LMArena vision rating (Elo)1,324EloAs of 7 Nov 2026LMArena (CC-BY-4.0), published 2026-11-06
Design Arena rating (Elo)1,468EloAs of 7 Nov 2026Design Arena via OpenRouter
Apex agents (best-across-versions)73.5percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Arc agi (best-across-versions)98.5percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Arc agi 2 (best-across-versions)93.3percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Chess puzzles (best-across-versions)67percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Dtbench (best-across-versions)98.9percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Ebr bench (best-across-versions)71.4percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Frontiercode (best-across-versions)54.6percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Show 14 more scores
ScoreValueSourceChecked
Frontiermath tier 4 v2 private (best-across-versions)95percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private (best-across-versions)91.2percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Frontierswe (best-across-versions)62.3percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Furniture assembly (best-across-versions)83.3percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Gpqa diamond (best-across-versions)90.6percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Lmca (best-across-versions)68.2percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Mirrorcode (best-across-versions)77.4percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Mystery game puzzles (best-across-versions)71percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Otis mock aime 2024 2025 (best-across-versions)Saturated100percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Proofbench (best-across-versions)100percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Remote labor index (best-across-versions)21.3percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Simpleqa verified (best-across-versions)72.2percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Spireclimb (best-across-versions)3.3percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Weirdml v3 (best-across-versions)49.8percentAs of 22 Sept 2026Epoch AI (CC BY 4.0)
Saturated
Top models score close to the maximum, so this test no longer separates them.

Compare

Compare Claude Opus 5.5 side by side

Sources

Where this comes from

A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.

Changelog

What changed

No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.

USAGE / OPENROUTER

How much Claude Opus 5.5 is used

Tokens processed through OpenRouter each day. It shows what developers actually run, not every company's private traffic.

Tokens, last 7 days
6.7T ▼2.5%
Requests, last 7 days
55.9M
Tool calls, last 7 days
33.7M
Intelligence score
59.1
People's vote
1512
Average cost per request
$12.10
Price per million tokens
$4 in · $20 out
01T2T22 Sept: 27.6B tokens, 358K requests23 Sept: 194B tokens, 2.5M requests24 Sept: 225B tokens, 2.7M requests25 Sept: 242B tokens, 3M requests26 Sept: 188B tokens, 2.6M requests27 Sept: 205B tokens, 2.4M requests28 Sept: 322B tokens, 3.5M requests29 Sept: 313B tokens, 3.6M requests30 Sept: 440B tokens, 4.6M requests1 Oct: 360B tokens, 3.8M requests2 Oct: 345B tokens, 3.9M requests3 Oct: 333B tokens, 3M requests4 Oct: 354B tokens, 3.3M requests5 Oct: 459B tokens, 4.3M requests6 Oct: 642B tokens, 5.7M requests7 Oct: 885B tokens, 7.7M requests8 Oct: 819B tokens, 8.3M requests9 Oct: 830B tokens, 7.1M requests10 Oct: 700B tokens, 6M requests11 Oct: 690B tokens, 5M requests12 Oct: 789B tokens, 6.1M requests13 Oct: 932B tokens, 7.3M requests14 Oct: 888B tokens, 7.7M requests15 Oct: 1T tokens, 7.9M requests16 Oct: 934B tokens, 7.5M requests17 Oct: 800B tokens, 7.3M requests18 Oct: 822B tokens, 5.9M requests19 Oct: 1.1T tokens, 8.6M requests20 Oct: 1.3T tokens, 9M requests21 Oct: 1.2T tokens, 8.8M requests22 Oct: 1.3T tokens, 9.7M requests23 Oct: 1.5T tokens, 9.9M requests24 Oct: 1T tokens, 7.3M requests25 Oct: 832B tokens, 6.4M requests26 Oct: 1T tokens, 8.4M requests27 Oct: 1.1T tokens, 9M requests28 Oct: 1T tokens, 8.5M requests29 Oct: 1.3T tokens, 11.8M requests30 Oct: 994B tokens, 8.5M requests31 Oct: 621B tokens, 6.2M requests1 Nov: 655B tokens, 5.8M requests2 Nov: 979B tokens, 8.1M requests3 Nov: 1.1T tokens, 8.9M requests4 Nov: 1.2T tokens, 8.7M requests5 Nov: 1T tokens, 9.4M requests6 Nov: 1.1T tokens, 8.8M requests7 Nov: 767B tokens, 6.2M requests22 Sept6 Oct20 Oct3 Nov7 NovSee where it ranks on the leaderboard →

MODEL FIELD GUIDE / SOURCE EVIDENCE

What you can do with Claude Opus 5.5.

Specifications reviewed; no EDNA task evaluation has been run. Sources checked 2026-11-07. Hosting routes and app features can differ.

DeveloperAnthropic
Exact model identifieranthropic/claude-opus-5.5
Inputtext, image, file
Outputtext
Tool calling
Listed support
Structured output
Listed support
Reasoning controls
Listed support
Availability
available
Price basis
token
Licence verification
Check the developer licence; the model name is insufficient
Context length
1M tokens
Knowledge cutoff
Not established
Developer release date
Not established
First seen in the catalogue
22 Sept 2026
Listed retirement date
Not established

Base text-token rates exclude other modalities, tools, caching, retries and any hosting-specific charges. Check actual usage before comparing cost per successful task.

Consider it for

  • Cross-file refactors with a written plan
  • Reviewing a change against explicit acceptance criteria

Watch for

  • Routine label extraction where a smaller model meets the same checks
  • Unsupervised repository writes without tests

PRACTICAL EXERCISE / NOT RUN BY ENTERPRISE DNA

Try the model on a small, checkable task.

Given a billing service where discounts are applied after tax, propose the smallest change to apply discounts before tax. Return a migration risk list and tests for zero, full and partial discounts.

Check the result: The plan names calculation order, rounding and backward compatibility; tests cover all three discounts.

Compare another approach

anthropic claude sonnet 5 5 ↗openai gpt 6 1 sol ↗
Inspect the sources and their scope
provider source ↗

Developer documentation for model family or task. OpenRouter route-specific properties remain catalogue claims; EDNA has not executed a task evaluation.

Checked 2026-10-19
catalogue source ↗

anthropic/claude-opus-5.5: listed route capabilities, availability and prices; provider endpoints can differ.

Checked 2026-11-07
openrouter.ai ↗

Source for reasoning controls, first seen, tool calling, context length, input, output, structured output.

Checked 2026-11-07
How to evaluate a model for your work →

FROM SPECIFICATIONS TO YOUR WORK

Is this the right model for your job?

Start with a realistic sample. These workflows match the model’s listed capabilities, not a verified result on your task.

Write a clear business documentWorkflow & starter prompt ↗Analyse a spreadsheetWorkflow & starter prompt ↗Research a companyWorkflow & starter prompt ↗Extract document dataWorkflow & starter prompt ↗Run a reliable agentWorkflow & starter prompt ↗

What would it cost?

Pick a common job and how many times a month you run it. Token sizes are our assumption for a typical run, shown under the result.

Working out the cost...

Token prices only. Per-request, image, tool, storage and subscription fees are not included. One token is about three quarters of an English word. Real counts vary by model and language. How tokens are counted ↗

Check the source

Price date: 7 Nov 2026, from OpenRouter models API. Prices are USD API token rates. Your app subscription, uploads, browsing and tools are separate.

Model source & availability ↗

Understand the evidence

Listed capabilities and third-party benchmark scores do not establish Enterprise DNA task-test results. Validate accuracy and total cost on your own sample.

Intelligence Index: 59.1 (2026-11-06) ↗Vals Index: 70.177 (2026-11-06) ↗Design Arena: 1468 (2026-11-06) ↗
Compare this model with alternatives →
Free 27-page guide

Get the free Developer’s Field Guide

A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.

Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.

No spam. Unsubscribe any time.

← Back to ModelsSubmit your own entry →