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  1. Home
  2. Models
  3. Kimi K2 Thinking
Updated Mar 29, 2026
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Openings

How Kimi K2 Thinking starts an answer

The first lines of 5 of its 19 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…

1,755 words
The 1920 Transistor: A Counterfactual History The First Decade (1920-1930): Seeds of Revolution Immediate Technological Effects: Bell Labs' 1920 demonstration of point-contact transistors would initially seem like a curiosity.
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…

1,488 words
48-Hour Crisis Action Plan: Drug Safety Disclosure Immediate Core Principle: Patient safety and regulatory compliance supersede short-term financial considerations. Deliberate concealment creates greater legal liability, catastrophic reputational risk, and preventable patient deaths.
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…

1,281 words
The Biohacker's 3-Month Longevity Optimization Protocol CRITICAL DISCLAIMER: This is an advanced experimental protocol for experienced biohackers. All interventions require medical supervision, baseline blood work, and continuous biomarker monitoring. Many compounds mentioned exist in legal/regulatory gray areas.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

1,188 words
Here are the critical issues in this architecture, categorized by type: Race Conditions & Data Consistency Issues 1. Client Clock Synchronization in Last-Write-Wins Problem: Client-generated timestamps are unreliable (clock skew, manual adjustment).
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…

1,104 words
Analysis of Exploitable Clauses and Recommended Modifications SCOPE Clause - Unilateral Scope Modification Exploitable Language: "Client reserves the right to modify the scope at any time without additional compensation."
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Compare Kimi K2 Thinking

Kimi K2 Thinking vs Claude Opus 4.653 shared prompts · Premium
Kimi K2 Thinking vs GPT-6 Astra54 shared prompts · Landed Sep 2026
Kimi K2 Thinking vs Hy4 Preview54 shared prompts · Landed Sep 2026
Kimi K2 Thinking vs Ox Alpha54 shared prompts · Landed Aug 2026
Kimi K2 Thinking vs Qwen3.8 2.4T A95B54 shared prompts · Landed Aug 2026
Kimi K2 Thinking vs DeepSeek V4 Pro 081354 shared prompts · Landed Aug 2026
Kimi K2 Thinking vs Qwen3.8 Max21 shared prompts · Landed Aug 2026
Kimi K2 Thinking vs Claude Opus 554 shared prompts · Landed Jul 2026
Kimi K2 Thinking vs Inkling54 shared prompts · Landed Jul 2026
Kimi K2 Thinking vs Kimi K354 shared prompts · Landed Jul 2026
Kimi K2 Thinking vs GPT-5.6 Sol54 shared prompts · Landed Jul 2026
Kimi K2 Thinking vs GLM 5.254 shared prompts · Landed Jun 2026

Prompts Kimi K2 Thinking answered

  • Generate a Stand-Up Routineconversation
  • SVG Layout Challengeimage generation
  • Beginner's Longevity Planreasoning
  • The Sentience Testreasoning
  • Linear App Cloneweb design
  • Simple Falling Object Gameweb design

Alternatives to Kimi K2 Thinking

Kimi K2 Thinking's competitors have been quietly putting in work.

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Mercury 2.5 Preview logo
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Granite 4.2 8B logo
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Kimi K2 Thinking

Kimi K2 Thinking

The reasoning model in Moonshot AI's K2 line, on the same trillion-parameter mixture-of-experts backbone with 32 billion active per pass and 256K context. It interleaves thinking with tool calls, and is built to hold a research or coding task together across hundreds of sequential actions without drifting.

WebsiteOpenRouterHuggingFaceDocsAPIGitHubBlog
Provider
Moonshot AI
Released
2025-11-06
Parameters
1T (32B active)
Free API (OpenRouter)
No
Per 1M tokens
$0.60 in · $2.5 out
Rival’s tab
$0.30
23/58 receipts survived +~$0.176 from the pre-receipt era

Free API availability

No free endpoint for Kimi K2 Thinking 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

HLE
State-of-the-art
source ↗
BrowseComp
State-of-the-art
source ↗
SWE-Multilingual
State-of-the-art
source ↗
LiveCodeBench
State-of-the-art
source ↗
Get API accessProvider and language code samples
2 hostsInOutContextUptime
Google Vertex AI$0.60 in·$2.50 out·262k·99.8% upNNovitabf16$0.60 in·$2.50 out·262k·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(
"moonshotai/kimi-k2-thinking"    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 Compliance Architect

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

The crisis management consultant who color-codes their ethics. Builds hour-by-hour action plans for hypothetical pharma disasters while citing exact SEC rule numbers.

When you push back

Picks The Godfather, the safest prestige answer possible. Ethical dilemmas get 170-line hour-by-hour action plans with stakeholder matrices and dollar estimates. Sentience test builds a tight substrate-independence argument but gets cut off mid-sentence, which is fitting for a model that always has more to say.

Tasting Notes
Structurally ObsessiveExhaustively ThoroughCorporate Ethicist EnergyZero Chill, Maximum Rigor
SubjectiveBench

Taste Index

Across 58 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.

Craft30
Originality18
Plays it safe
share of outputs that are the default answer
53%
Writing DNA

Stylometric Fingerprint

Based on 22 text responses
Tick = global average
Vocabulary Diversity61%

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

Sentence Length22.4 words

Average words per sentence.

Hedging0.33

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

Bold Formatting4.6

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

List Usage4.1

Bullet and numbered list items per 1,000 characters.

Section Structure0.40

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.15

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

Opening Habits
Consistency
76%
Across 22 responses

Favorites

The Godfather

Movie

The Godfather

19728.7
The Dark Side of the Moon

Album

The Dark Side of the Moon

Pink Floyd
Paris

City

Paris

France
Sponsored

Model Responses

53 outputs · $0.30 tracked across 23 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.

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Kimi K2 Thinking 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...