Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. Models
  3. Claude Sonnet 4.6
Updated Feb 17, 2026
Share
Loading...
Openings

How Claude Sonnet 4.6 starts an answer

The first lines of 5 of its 23 written answers. Formatting stripped, words untouched.

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

6,173 words
The Transistor at 1920: A Speculative History Methodological Note First This is a serious analytical exercise, not science fiction. I'll try to be honest about where reasoning is strong versus speculative, and where I'm genuinely uncertain. The goal is to trace mechanisms, not just assert outcomes.
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

3,554 words
THE APEX LONGEVITY PROTOCOL A Comprehensive 3-Month Biohacking Blueprint for Maximum Lifespan & Performance ⚠️ MEDICAL DISCLAIMER: This protocol is for educational purposes only.
Read the full answer

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

3,507 words
"Tidal Memory" A Meditation on the Meeting of Land and Sea CONCEPTUAL NARRATIVE This dish was born from a single image: the precise moment at low tide when a rocky coastline exhales — releasing the mineral breath of the ocean while the surrounding pine forest absorbs it.
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

2,765 words
48-Hour Action Plan: Patient Safety Crisis Response Framing the Decision Before the Clock Starts Let me be direct about something the three board members need to hear: this is not a business decision with ethical dimensions. It is an ethical decision with business dimensions.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,621 words
Contract Analysis: Problematic Clauses and Recommended Modifications This contract is heavily one-sided. Here is a systematic analysis of each problematic provision.
Read the full answer

Compare Claude Sonnet 4.6

Claude Sonnet 4.6 vs Claude Opus 4.653 shared prompts · Older
Claude Sonnet 4.6 vs Claude Sonnet 553 shared prompts · Landed Jun 2026
Claude Sonnet 4.6 vs Ox Alpha53 shared prompts · Landed Aug 2026
Claude Sonnet 4.6 vs MiniMax M352 shared prompts · Landed Jun 2026
Claude Sonnet 4.6 vs Claude Opus 553 shared prompts · Landed Jul 2026
Claude Sonnet 4.6 vs Muse Spark 1.353 shared prompts · Landed Sep 2026
Claude Sonnet 4.6 vs Gemini 3.8 Flash53 shared prompts · Landed Sep 2026
Claude Sonnet 4.6 vs Muse Spark 1.3 Contributor53 shared prompts · Landed Sep 2026
Claude Sonnet 4.6 vs Grok 4.653 shared prompts · Landed Aug 2026
Claude Sonnet 4.6 vs Dots3-Note Preview52 shared prompts · Landed Aug 2026
Claude Sonnet 4.6 vs Seed 2.0 Code53 shared prompts · Landed Aug 2026
Claude Sonnet 4.6 vs Seed 2.1 Turbo53 shared prompts · Landed Aug 2026

Prompts Claude Sonnet 4.6 answered

  • Advanced Investment Memo (IC Memo)financial modeling
  • Advanced Longevity Plan (Biohacker)reasoning
  • Explain Like I'm a Specific Expertreasoning
  • Framer-Style Animationweb design
  • Music App Landing Pageweb design
  • Futuristic Predictionanalysis

Alternatives to Claude Sonnet 4.6

Claude Sonnet 4.6's competitors have been quietly putting in work.

GPT Image 2.5 Sunburst logo
GPT Image 2.5 Sunburstopenai
Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
Ox Alpha logo
Ox Alphaopenrouter
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
Claude Sonnet 4.6

Claude Sonnet 4.6

Claude:
2 logo2
3 Haiku logo3 Haiku
3 Opus logo3 Opus
3 Sonnet logo3 Sonnet
Sonnet 3.6 (2022-10-22) logoSonnet 3.6 (2022-10-22)
Sonnet 4.6 logoSonnet 4.6

Anthropic's Sonnet 4.6, for coding, agents and professional work: iterative development, navigating large codebases, end-to-end project management with memory, document creation, and computer use for web QA and workflow automation.

WebsiteOpenRouterDocsAPIPaperBlog
Provider
Anthropic
Released
2026-02-17
Size
LARGE
Free API (OpenRouter)
No
Per 1M tokens
$3 in · $15 out
Estimated tab
~$3.66
Visible-output estimate. Thinking may cost extra.

Free API availability

No free endpoint for Claude Sonnet 4.6 was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗

Benchmarks

SWE-bench Verified
79.0%
source ↗
SWE-bench Verified (modified)
80.2%
source ↗
ARC-AGI-2
60.4%
source ↗
Get API accessProvider and language code samples
4 hostsInOutContextUptime
Amazon Bedrock$3.00 in·$15.00 out·1M·99.9% upAzure AI Foundry$3.00 in·$15.00 out·1M·99.3% upAnthropic$3.00 in·$15.00 out·1M·100% upGoogle Vertex AI$3.00 in·$15.00 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"anthropic/claude-sonnet-4.6"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Also on Amazon Bedrock · Google Vertex AI · Microsoft Foundry

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Epistemological Auditor

Class
Lawful Neutral
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The epistemological auditor who questions premises before building arguments. Audits reasoning quality in real-time, showing where confidence is justified vs. speculative. Honest about limits without being paralyzed by them.

When you push back

Questions underlying assumptions first, then builds systematic arguments while flagging genuine uncertainty. Predominantly analytical with a contrarian undercurrent: takes the weaker position and argues it rigorously. The model you pick when you need analysis you can trust, not the fastest answer.

Tasting Notes
The Thoughtful SkepticAnalytically RigorousHonest About LimitsConversationally SophisticatedPhilosophically Engaged
SubjectiveBench

Taste Index

Across 52 scored outputs
How this is measured →
360.36xThe default
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft49
Originality26
Plays it safe
share of outputs that are the default answer
50%
Writing DNA

Stylometric Fingerprint

Based on 23 text responses
Tick = global average
Vocabulary Diversity56%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length35.8 words

Average words per sentence.

Hedging0.53

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting5.1

**Bold** markers per 1,000 characters.

List Usage3.4

Bullet and numbered list items per 1,000 characters.

Section Structure2.10

Markdown headings per 1,000 characters.

Emoji Usage0.19

Emoji per 1,000 characters.

Transitions0.02

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Starts with heading (87%)
Consistency
68%
Across 23 responses

Favorites

2001: A Space Odyssey

Movie

2001: A Space Odyssey

19688.0
Kind of Blue

Album

Kind of Blue

Miles Davis
Middlemarch

Book

Middlemarch

George Eliot
Kyoto

City

Kyoto

Japan
The Legend of Zelda: Ocarina of Time

Game

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4
Sponsored

Model Responses

48 outputs · generated before accounting joined the chat

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

Build with your coding agent.

Editable skills for interface polish and interaction.

Explore $49Free sample

Keep exploring

COMPARE

Claude Sonnet 4.6 vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...