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Claude Sonnet 4.5

by Anthropic

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.

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Our verdict

Not reviewed yet

We have not reviewed Claude Sonnet 4.5 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 4.5

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows.

Best for

Daily driver for agentic coding and analysis

Use cases

  • Claude Code / Cursor agent loops
  • research synthesis
  • customer support agents

Enterprise DNA angle

Omni wires Sonnet into scheduled jobs and CRM write-backs so model quality becomes an operating layer, not a chat tab.

Notes

Claude Sonnet 4.5 is listed in the EDNA Models directory from the OpenRouter catalogue.

Pros

  • Latest Sonnet-class balance of speed and quality
  • Excellent for tool-using agents
  • Large context for multi-file refactors

Cons

  • Premium pricing vs open weights
  • Closed model — vendor lock-in on Anthropic/OpenRouter path

Key facts

What we have checked

Input price
$3.00 per million tokens
Checked OpenRouter models API
Output price
$15.00 per million tokens
Checked OpenRouter models API
Price on amazon-bedrock
$0.300 per million cached input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$3.00 per million input tokens
Checked OpenRouter models API
Price on amazon-bedrock
$15.00 per million output tokens
Checked OpenRouter models API
Price on anthropic
$0.300 per million cached input tokens
Checked OpenRouter models API
Price on anthropic
$3.00 per million input tokens
Checked OpenRouter models API
Price on anthropic
$15.00 per million output tokens
Checked OpenRouter models API
Price on azure
$0.300 per million cached input tokens
Checked OpenRouter models API
Gpqa diamond
82.3% (for 29 Sept 2025)
Checked Epoch AI (CC BY 4.0)
Swe bench verified
71.3% (for 29 Sept 2025)
Checked Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private
23.9% (for 29 Sept 2025)
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-4.5`.

  • openrouter · anthropic/claude-sonnet-4.5 · Docs

OpenRouter id: anthropic/claude-sonnet-4.5

Price

What Claude Sonnet 4.5 costs, over time

Input price

$3.00 to $3.00

US dollars per million input tokens. 3 Sept 2026 to 10 Nov 2026, 44 days.

Source: OpenRouter models API. Checked .

Output price

$15.00 to $15.00

US dollars per million output tokens. 3 Sept 2026 to 10 Nov 2026, 44 days.

Source: OpenRouter models API. Checked .

Prices by host

HostPriceOver timeChecked
amazon-bedrockCached input$0.300 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockInput$3.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
amazon-bedrockOutput$15.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicCached input$0.300 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicInput$3.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
anthropicOutput$15.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureCached input$0.300 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureInput$3.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
azureOutput$15.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsCached input$0.300 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsInput$3.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
claude-on-awsOutput$15.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexCached input$0.300 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexInput$3.00 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
google-vertexOutput$15.00 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API

Usage

How much Claude Sonnet 4.5 is used

Tokens served a day

8.8B to 11B

tokens a day on OpenRouter. 19 Sept 2026 to 10 Nov 2026, 53 readings.

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

Scores

How Claude Sonnet 4.5 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 Index20.7indexAs of 26 Oct 2026Artificial Analysis via OpenRouter
Artificial Analysis Coding Index52.1indexAs of 10 Nov 2026Artificial Analysis via OpenRouter
Artificial Analysis Agentic Index15.8indexAs of 10 Nov 2026Artificial Analysis via OpenRouter
LMArena text rating (Elo)1,439EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
LMArena web development rating (Elo)1,393EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
Design Arena rating (Elo)1,202EloAs of 10 Nov 2026Design Arena via OpenRouter
Arc agi (best-across-versions)63.7percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Arc agi 2 (best-across-versions)13.6percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Chess puzzles (best-across-versions)10percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Cybench (best-across-versions)60percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Deepresearch bench (best-across-versions)52.6percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Dtbench (best-across-versions)83.2percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Show 22 more scores
ScoreValueSourceChecked
Ebr bench (best-across-versions)2.4percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Frontiermath 2025 02 28 private (best-across-versions)15.2percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Frontiermath tier 4 2025 07 01 private (best-across-versions)4.2percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Frontiermath tier 4 v2 private (best-across-versions)2.4percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private (best-across-versions)23.9percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Gdpval (best-across-versions)42.5percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Gpqa diamond (best-across-versions)82.3percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Gso bench (best-across-versions)14.7percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Lmca (best-across-versions)38.8percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Math level 5 (best-across-versions)97.7percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Metr time horizons (best-across-versions)67.4percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Mystery game puzzles (best-across-versions)17percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Osworld (best-across-versions)62.9percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Otis mock aime 2024 2025 (best-across-versions)Saturated77.8percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Proofbench (best-across-versions)19percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Remote labor index (best-across-versions)2.1percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Simplebench (best-across-versions)54.3percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Simpleqa verified (best-across-versions)30.7percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Swe bench verified (best-across-versions)71.3percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Terminal bench (best-across-versions)46.5percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Vpct (best-across-versions)39.8percentAs of 29 Sept 2025Epoch AI (CC BY 4.0)
Weirdml (best-across-versions)47.7percentAs of 29 Sept 2025Epoch 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 4.5 is used

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

Tokens, last 7 days
64.9B ▼70.2%
Requests, last 7 days
6.8M
Tool calls, last 7 days
686K
People's vote
1439
Average cost per request
$2.86
Price per million tokens
$3 in · $15 out
050B100B19 Sept: 8.8B tokens, 983K requests20 Sept: 11.6B tokens, 1.8M requests21 Sept: 12.7B tokens, 1.4M requests22 Sept: 12.7B tokens, 1.2M requests23 Sept: 13.6B tokens, 1.3M requests24 Sept: 14.7B tokens, 1.2M requests25 Sept: 14.8B tokens, 1.3M requests26 Sept: 15.5B tokens, 1.4M requests27 Sept: 13.1B tokens, 1.3M requests28 Sept: 16.8B tokens, 1.4M requests29 Sept: 17.4B tokens, 1.5M requests30 Sept: 17.2B tokens, 1.5M requests1 Oct: 18.5B tokens, 1.5M requests2 Oct: 18.1B tokens, 1.5M requests3 Oct: 16.2B tokens, 1.5M requests4 Oct: 16.6B tokens, 1.5M requests5 Oct: 20.4B tokens, 1.6M requests6 Oct: 21B tokens, 1.6M requests7 Oct: 24.2B tokens, 2M requests8 Oct: 24.5B tokens, 1.7M requests9 Oct: 21.7B tokens, 1.7M requests10 Oct: 19.8B tokens, 1.6M requests11 Oct: 17.1B tokens, 1.4M requests12 Oct: 20.9B tokens, 1.9M requests13 Oct: 21.7B tokens, 1.7M requests14 Oct: 22.4B tokens, 1.6M requests15 Oct: 24.6B tokens, 1.7M requests16 Oct: 26.3B tokens, 1.9M requests17 Oct: 26.4B tokens, 1.8M requests18 Oct: 27.3B tokens, 1.7M requests19 Oct: 28.1B tokens, 1.8M requests20 Oct: 29.3B tokens, 1.9M requests21 Oct: 31.3B tokens, 2.2M requests22 Oct: 35.3B tokens, 2.4M requests23 Oct: 36.1B tokens, 2.4M requests24 Oct: 38.2B tokens, 2.2M requests25 Oct: 41.2B tokens, 2.3M requests26 Oct: 45.9B tokens, 2.9M requests27 Oct: 54.2B tokens, 2.9M requests28 Oct: 28.2B tokens, 2M requests29 Oct: 24.5B tokens, 2.1M requests30 Oct: 35.9B tokens, 2.6M requests31 Oct: 55.8B tokens, 3.4M requests1 Nov: 45.5B tokens, 2.4M requests2 Nov: 18.3B tokens, 1.4M requests3 Nov: 9.7B tokens, 928K requests4 Nov: 9.4B tokens, 901K requests5 Nov: 10.5B tokens, 1.2M requests6 Nov: 8B tokens, 848K requests7 Nov: 7.9B tokens, 860K requests8 Nov: 7B tokens, 780K requests9 Nov: 11B tokens, 1.1M requests10 Nov: 11B tokens, 1.2M requests19 Sept3 Oct17 Oct31 Oct10 NovSee where it ranks on the leaderboard →

MODEL FIELD GUIDE / SOURCE EVIDENCE

What you can do with Claude Sonnet 4.5.

Listed specifications; 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-4.5
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
31 Jan 2025
Developer release date
Not established
First seen in the catalogue
29 Sept 2025
Listed retirement date
Not established
Inspect the sources and their scope
catalogue source ↗

anthropic/claude-sonnet-4.5: 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, knowledge cutoff, 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 ↗Build an appWorkflow & 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.

Coding Index: 52.1 (2026-11-09) ↗Agentic Index: 15.8 (2026-11-09) ↗Design Arena: 1202 (2026-11-09) ↗
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