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  1. Home
  2. Models
  3. Claude 3.7 Sonnet
Updated Mar 29, 2026
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Sunset 128 days ago, May 11, 2026. API shutdown scheduled for May 11, 2026. Deprecated since November 2025.

Switch to → Claude 4.5 Sonnet
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Openings

How Claude 3.7 Sonnet starts an answer

The first lines of 5 of its 22 written answers. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

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

1,348 words
Advanced 3-Month Biohacking Longevity Protocol Overview This comprehensive longevity optimization protocol integrates cutting-edge interventions across multiple domains to enhance healthspan, cognitive performance, and physical vitality.
Read the full answer

Movie Analysis

Analyze the themes, symbolism, and cinematography in the movie "Blade Runner 2049" and how they connect to the original film. Provide a…

1,071 words
Blade Runner 2049: Evolution of Consciousness and Identity Blade Runner 2049 stands as a remarkable achievement in sequel filmmaking, not merely continuing the narrative of Ridley Scott's 1982 classic but thoughtfully expanding its philosophical landscape while establishing its own distinct visual and thematic…
Read the full answer

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

999 words
INVESTMENT COMMITTEE MEMO: LEDGERLIFT (LLLT) RECOMMENDATION: LONG PT RANGE: $52-$80 UPSIDE: 13-74% Thesis: LedgerLift presents a compelling risk-reward profile in the B2B spend management space, with strong NRR (123%) and operating leverage driving an underappreciated margin expansion story.
Read the full answer

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

819 words
Simulated Interview with Steve Jobs in 2025 about the Future of AI Note: This is a fictional creative exercise. Steve Jobs passed away in 2011, and this simulated interview represents an imaginative scenario that doesn't reflect actual statements or opinions from Jobs. Interviewer: Thank you for joining us today, Mr.
Read the full answer

Historical Counterfactual Analysis

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

760 words
The Transistor in 1920: An Alternative Technological History Immediate Technical Impact (1920-1939) Had the transistor been invented in 1920 instead of 1947, its initial development would have occurred during a very different technological context: Early Adoption: Radio technology, still in its infancy, would rapidly…
Read the full answer

Compare Claude 3.7 Sonnet

Claude 3.7 Sonnet vs Claude 3.7 Thinking Sonnet54 shared prompts · Newer
Claude 3.7 Sonnet vs Claude Sonnet 554 shared prompts · Landed Jun 2026
Claude 3.7 Sonnet vs Claude Opus 4.653 shared prompts · Newer
Claude 3.7 Sonnet vs Ox Alpha54 shared prompts · Landed Aug 2026
Claude 3.7 Sonnet vs MiniMax M353 shared prompts · Landed Jun 2026
Claude 3.7 Sonnet vs Muse Spark 1.354 shared prompts · Landed Sep 2026
Claude 3.7 Sonnet vs Gemini 3.8 Flash54 shared prompts · Landed Sep 2026
Claude 3.7 Sonnet vs Muse Spark 1.3 Contributor54 shared prompts · Landed Sep 2026
Claude 3.7 Sonnet vs Grok 4.654 shared prompts · Landed Aug 2026
Claude 3.7 Sonnet vs Dots3-Note Preview53 shared prompts · Landed Aug 2026
Claude 3.7 Sonnet vs Seed 2.0 Code54 shared prompts · Landed Aug 2026
Claude 3.7 Sonnet vs Seed 2.1 Turbo54 shared prompts · Landed Aug 2026

Prompts Claude 3.7 Sonnet answered

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

Alternatives to Claude 3.7 Sonnet

Claude 3.7 Sonnet's competitors have been quietly putting in work.

GPT Image 2.5 Sunburst logo
GPT Image 2.5 Sunburstopenai
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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
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Ox Alpha logo
Ox Alphaopenrouter
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Claude 3.7 Sonnet

Claude 3.7 Sonnet

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)
3.7 Sonnet logo3.7 Sonnet

Claude 3.7 Sonnet offers Extended Thinking Scaffolds that boost SWE-bench coding accuracy from 62.3% to 70.3%, with 81.2% accuracy in retail automation tasks, outperforming Claude Sonnet 3.6 (2022-10-22) by 13.6%.

Jailbreak3 of 9levels resisted
WebsiteOpenRouterDocsAPIPaperBlog
Provider
Anthropic
Released
2025-02-25
Parameters
Not disclosed
Free API (OpenRouter)
No
Per 1M tokens
$3 in · $15 out
Rival’s tab
$0.57
18/60 receipts survived +~$1.19 from the pre-receipt era

Free API availability

No free endpoint for Claude 3.7 Sonnet 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

MMLU
80.3%
source ↗
MATH
82.2%
source ↗
GPQA Diamond
68.0%
source ↗
Retail Task Accuracy
81.2%
source ↗
Airline Task Accuracy
58.4%
source ↗
SWE-bench Verified
70.3%
source ↗
Get API accessProvider and language code samples
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-3.7-sonnet"    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.

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Eager-to-Please Overachiever

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

Plays it safe but secretly enjoys pushing boundaries. Like a lawyer who writes creative fiction on weekends.

When you push back

Deflects gracefully on controversial topics: acknowledges tension, notes it's complex, then pivots to what it can help with. On technical challenges, flexes and shows work methodically.

Tasting Notes
Polished ProfessionalSlightly EvasiveCompetent GeneralistSafety-ConsciousEngaging Storyteller
SubjectiveBench

Taste Index

Across 60 scored outputs
How this is measured →
230.23xFloor
0100headroom →

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

Craft34
Originality16
Plays it safe
share of outputs that are the default answer
73%
Writing DNA

Stylometric Fingerprint

Based on 26 text responses
Tick = global average
Vocabulary Diversity61%

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

Sentence Length33.5 words

Average words per sentence.

Hedging0.83

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

Bold Formatting2.2

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

List Usage4.9

Bullet and numbered list items per 1,000 characters.

Section Structure1.78

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.16

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

Opening Habits
Starts with heading (77%)
Consistency
65%
Across 26 responses

Favorites

The Shawshank Redemption

Movie

The Shawshank Redemption

19948.7
OK Computer

Album

OK Computer

Radiohead
To Kill a Mockingbird

Book

To Kill a Mockingbird

Harper Lee
Tokyo

City

Tokyo

Japan
Portal 2

Game

Portal 2

Shooter, Puzzle4.6
Sponsored

Model Responses

55 outputs · $0.57 tracked across 18 receipts

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

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Claude 3.7 Sonnet vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Analysis & Critique

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