Enterprise DNAEnterprise DNA
Anthropic logo

Models · Reasoning

Claude Sonnet 5.5

by Anthropic

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.

Visit Anthropic ↗

Our verdict

Not reviewed yet

We have not reviewed Claude Sonnet 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 Sonnet 5.5

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.

Best for

Scoped features and debugging

Notes

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

Pros

  • Implementing a bounded feature from clear acceptance criteria
  • text, image, file input; text output on the listed OpenRouter route

Cons

  • Assuming a Sonnet label proves task accuracy
  • Giving ambiguous requirements to an unattended build
  • 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
$2.00 per million tokens
Checked OpenRouter models API
Output price
$10.00 per million tokens
Checked OpenRouter models API
Price on amazon-bedrock
$0.100 per million cached input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$2.00 per million input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$10.00 per million output tokens
Checked OpenRouter models API
Price on anthropic
$0.100 per million cached input tokens
Checked OpenRouter models API
Price on anthropic
$2.00 per million input tokens
Checked OpenRouter models API
Price on anthropic
$10.00 per million output tokens
Checked OpenRouter models API
Price on azure
$0.100 per million cached input tokens
Checked OpenRouter models API
Gpqa diamond
95.6% (for 28 Sept 2026)
Checked Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private
88.8% (for 28 Sept 2026)
Checked Epoch AI (CC BY 4.0)
Simpleqa verified
46.5% (for 28 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-sonnet-5.5`.

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

OpenRouter id: anthropic/claude-sonnet-5.5

Price

What Claude Sonnet 5.5 costs, over time

Input price

$2.00 to $2.00

US dollars per million input tokens. 29 Sept 2026 to 10 Nov 2026, 34 days.

Source: OpenRouter models API. Checked .

Output price

$10.00 to $10.00

US dollars per million output tokens. 29 Sept 2026 to 10 Nov 2026, 34 days.

Source: OpenRouter models API. Checked .

Prices by host

HostPriceOver timeChecked
amazon-bedrockCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockInput$2.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockOutput$10.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicInput$2.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicOutput$10.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureInput$2.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureOutput$10.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsInput$2.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsOutput$10.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexCached input$0.100 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexInput$2.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexOutput$10.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API

Usage

How much Claude Sonnet 5.5 is used

Tokens served a day

14.1B to 395.4B

tokens a day on OpenRouter. 28 Sept 2026 to 10 Nov 2026, 44 readings.

Source: OpenRouter model activity (748 of 748 series). Checked .

Scores

How Claude Sonnet 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 Index54.5indexAs of 10 Nov 2026Artificial Analysis via OpenRouter
LMArena text rating (Elo)1,469EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
LMArena web development rating (Elo)1,773EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
LMArena vision rating (Elo)1,284EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
Design Arena rating (Elo)1,398EloAs of 10 Nov 2026Design Arena via OpenRouter
Apex agents (best-across-versions)75.5percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Chess puzzles (best-across-versions)59percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Dtbench (best-across-versions)97.3percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Frontiercode (best-across-versions)52.1percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Frontiermath tier 4 v2 private (best-across-versions)80.5percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private (best-across-versions)88.8percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Frontierswe (best-across-versions)61.9percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Show 9 more scores
ScoreValueSourceChecked
Furniture assembly (best-across-versions)75percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Gpqa diamond (best-across-versions)95.6percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Lmca (best-across-versions)68.3percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Mystery game puzzles (best-across-versions)65percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Otis mock aime 2024 2025 (best-across-versions)Saturated100percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Proofbench (best-across-versions)100percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Simpleqa verified (best-across-versions)46.5percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Spireclimb (best-across-versions)1.3percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Weirdml v3 (best-across-versions)37percentAs of 28 Sept 2026Epoch AI (CC BY 4.0)
Saturated
Top models score close to the maximum, so this test no longer separates them.

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 Sonnet 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
2.4T ▼6.4%
Requests, last 7 days
54.4M
Tool calls, last 7 days
18.7M
Intelligence score
54.5
People's vote
1469
Average cost per request
$2.60
Price per million tokens
$2 in · $10 out
0500B1T28 Sept: 14.1B tokens, 354K requests29 Sept: 98.7B tokens, 2.2M requests30 Sept: 138B tokens, 2.7M requests1 Oct: 154B tokens, 3.3M requests2 Oct: 141B tokens, 3.1M requests3 Oct: 130B tokens, 2.7M requests4 Oct: 114B tokens, 2.7M requests5 Oct: 152B tokens, 3.4M requests6 Oct: 363B tokens, 5.4M requests7 Oct: 344B tokens, 5M requests8 Oct: 247B tokens, 4.3M requests9 Oct: 366B tokens, 5.4M requests10 Oct: 428B tokens, 4.4M requests11 Oct: 531B tokens, 4.8M requests12 Oct: 375B tokens, 5.3M requests13 Oct: 372B tokens, 6.6M requests14 Oct: 389B tokens, 6.1M requests15 Oct: 318B tokens, 6.6M requests16 Oct: 397B tokens, 6.3M requests17 Oct: 315B tokens, 4.7M requests18 Oct: 291B tokens, 4.8M requests19 Oct: 351B tokens, 6.3M requests20 Oct: 418B tokens, 7.1M requests21 Oct: 442B tokens, 7.6M requests22 Oct: 419B tokens, 7.2M requests23 Oct: 353B tokens, 7.1M requests24 Oct: 242B tokens, 6.3M requests25 Oct: 241B tokens, 5.6M requests26 Oct: 343B tokens, 7.4M requests27 Oct: 428B tokens, 8.7M requests28 Oct: 451B tokens, 9.5M requests29 Oct: 574B tokens, 9.2M requests30 Oct: 361B tokens, 7.7M requests31 Oct: 222B tokens, 5.1M requests1 Nov: 225B tokens, 5.5M requests2 Nov: 339B tokens, 7.5M requests3 Nov: 386B tokens, 8.4M requests4 Nov: 395B tokens, 8.7M requests5 Nov: 376B tokens, 9.3M requests6 Nov: 419B tokens, 8.7M requests7 Nov: 222B tokens, 5.8M requests8 Nov: 238B tokens, 6M requests9 Nov: 350B tokens, 7.4M requests10 Nov: 395B tokens, 8.4M requests28 Sept12 Oct26 Oct9 Nov10 NovSee where it ranks on the leaderboard →

MODEL FIELD GUIDE / SOURCE EVIDENCE

What you can do with Claude Sonnet 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-sonnet-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
28 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

  • Implementing a bounded feature from clear acceptance criteria
  • Turning a document outline into a structured draft

Watch for

  • Assuming a Sonnet label proves task accuracy
  • Giving ambiguous requirements to an unattended build

PRACTICAL EXERCISE / NOT RUN BY ENTERPRISE DNA

Try the model on a small, checkable task.

Design a CSV import preview for columns invoice_id, amount and currency. Show validation rules and a sample error for a duplicate invoice_id; do not write imported records.

Check the result: The preview distinguishes invalid numbers, missing currencies and duplicate identifiers without saving anything.

Compare another approach

openai gpt 6 1 sol ↗google gemini 3 8 flash ↗
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-sonnet-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: 10 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: 54.5 (2026-11-09) ↗Vals Index: 70.854 (2026-11-09) ↗Design Arena: 1398 (2026-11-09) ↗
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 →