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  4. KAT-Coder-Pro V2
KwaiKAT
Released March 27, 2026

KAT-Coder-Pro V2

KAT-Coder-Pro V2 by KwaiKAT is an agentic coding model with 256K context, specialized training domains, tool use, structured outputs, and enterprise software engineering capabilities.

Visit KwaiKATAnnouncement
Inputs
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Outputs
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Model Overview

Capabilities, design details, and architectural traits

KAT-Coder-Pro V2 - Agentic Coding Model

KAT-Coder-Pro V2 is KwaiKAT's flagship agentic coding model designed for enterprise software engineering, large-scale codebases, SaaS integration, and multi-step developer workflows.

Defining Characteristics

  • Agentic coding focus: Built for complex software engineering tasks including multi-file editing, issue resolution, system integration, and long-running coding workflows.
  • 256K context window: Supports large codebases and extended development sessions through a long-context architecture.
  • Structured tool workflows: Supports tool use, function calling, structured outputs, and agent-based development pipelines.
  • Specialize-then-Unify training: Uses specialized training domains including SWE, WebCoding, Terminal, WebSearch, and General before combining capabilities into a unified coding model.

Core Design

KAT-Coder-Pro V2 focuses on production-grade software engineering. It also supports web aesthetics generation for creating polished landing pages and presentation materials.

Benchmark Performance

Independent evaluations · Artificial Analysis

33.7%
Intelligence
59.5%
Coding Index
15.1%
Agentic Index

Accuracy & Capability Details

GPQA - Graduate Science85.5%
Humanity's Last Exam16.1%
SciCode - Scientific Coding38.3%
Instruction Following66.7%
Long Context Reasoning70.0%
τ²-Bench - Agentic Tasks89.5%
TerminalBench - System Control49.2%
Specs
Context window
256Ktokens
Input pricing
$0.30per 1M tokens
Output pricing
$1.20per 1M tokens
Cached input
$0.06per 1M tokens

Prices in USD.

Compare Models Side-by-Side

Evaluate specifications, pricing, and independent benchmark indices

Model Details
General Info
ProviderKwaiKATAnthropicAnthropic
Release DateMarch 27, 2026July 24, 2026June 9, 2026
Knowledge Cutoff-May 2026-
Context & Limits
Context Window256K
1M
Best Context Window
1M
Best Context Window
Pricing (per 1M tokens)
Input Pricing
$0.30
Best Input Pricing
$5$10
Output Pricing
$1.20
Best Output Pricing
$25$50
Modalities
Inputs
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Outputs
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Benchmarks (0-100)
Intelligence Index33.7
63.1
Best Intelligence Index
62.1
Coding Index59.5
78.0
Best Coding Index
76.5
Agentic Index15.1
59.2
Best Agentic Index
56.6
KAT-Coder-Pro V2
Claude Opus 5
Claude Fable 5

GPQA Benchmark

Graduate-level reasoning and expert Q&A evaluation.

86%
KAT-Coder-Pro V2
GPQA Benchmark
Score: 86%
KAT-Coder-Pro V2
93%
Claude Opus 5
GPQA Benchmark
Score: 93%
Claude Opus 5
93%
Claude Fable 5
GPQA Benchmark
Score: 93%
Claude Fable 5

Humanity's Last Exam

Extremely difficult logical reasoning and knowledge.

16%
KAT-Coder-Pro V2
Humanity's Last Exam
Score: 16%
KAT-Coder-Pro V2
55%
Claude Opus 5
Humanity's Last Exam
Score: 55%
Claude Opus 5
56%
Claude Fable 5
Humanity's Last Exam
Score: 56%
Claude Fable 5

Long Context Reasoning

Logical reasoning over long context windows.

70%
KAT-Coder-Pro V2
Long Context Reasoning
Score: 70%
KAT-Coder-Pro V2
76%
Claude Opus 5
Long Context Reasoning
Score: 76%
Claude Opus 5
77%
Claude Fable 5
Long Context Reasoning
Score: 77%
Claude Fable 5

Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.

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