Skip to main content
idapt
HomeAI ModelsPricing
Sign inStart free

Kimi K3 vs Claude Opus 4

At a glance
MoonshotAIKimi K3

MoonshotAI's 2.8T-parameter flagship for complex coding, knowledge work, and long-horizon agent runs.

1.0M ctx$3.00/$15.00 per M
AnthropicClaude Opus 4

World-class coding model with sustained performance on complex agentic tasks.

75200K ctx$15.00/$75.00 per M#40/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
MoonshotAIKimi K3
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-16
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science93.5%Expert-Level43.5%
Math
Math Problems—Competition Math—Research Math—
Coding
Real-World Coding—Code Editing—
Agentic
Terminal Tasks88.3%Novel Reasoning—
AnthropicClaude Opus 4
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.4
Reasoning & Knowledge
Graduate Science69.2%Expert-Level—
Math
Math Problems85.0%Competition Math42.2%Research Math4.5%
Coding
Real-World Coding70.7%Code Editing70.7%
Agentic
Terminal Tasks—Novel Reasoning1.3%
Specs
MoonshotAIKimi K3
1.0M
Context
16K
Max output
Jul 2026
Released
AnthropicClaude Opus 4
200K
Context
32K
Max output
May 2025
Released
Capabilities
MoonshotAIKimi K3
Vision
Audio
Reasoning
AnthropicClaude Opus 4
Vision
Audio
Reasoning
Pricing
MoonshotAIKimi K3
Live pricing, shown before you run
Input$3.00/M tokens
Output$15.00/M tokens
Cache read$0.30/M tokens
AnthropicClaude Opus 4
Live pricing, shown before you run
Input$15.00/M tokens
Output$75.00/M tokens
Cache read$1.50/M tokens
Cache write$18.75/M tokens
Web search$0.01/search
Chat with Kimi K3Go to model
Chat with Claude Opus 4Go to model
Frequently Asked Questions: Kimi K3 vs Claude Opus 4▼

Which is better, Kimi K3 or Claude Opus 4?

▼

Both Kimi K3 and Claude Opus 4 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Kimi K3 or Claude Opus 4?

▼

Kimi K3 has a lower blended cost. Kimi K3: $3.00 input / $15.00 output. Claude Opus 4: $15.00 input / $75.00 output.

Which has a larger context window, Kimi K3 or Claude Opus 4?

▼

Kimi K3 has a larger context window: Kimi K3 supports 1M tokens vs Claude Opus 4 at 200K tokens.

Do both Kimi K3 and Claude Opus 4 support vision?

▼

Yes, both Kimi K3 and Claude Opus 4 support vision/image input.

What are the key differences between Kimi K3 and Claude Opus 4?

▼

Key differences: Kimi K3 is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Kimi K3 and Claude Opus 4 for free on idapt.app to see which performs better for your specific needs.

Open in App
  • Home
  • Pricing
  • AI Models
  • Image models
  • Voice models
  • Video models
  • Rankings
  • New models
  • Model status
  • Multi-Model Chat
  • Voice Mode
  • Voice HUD
  • Web Search
  • Image Generation
  • Video Generation
  • Audio Generation
  • Transcription
  • Drive
  • Secrets
  • Sharing
  • Workspaces
  • Tasks
  • Memory
  • Agents
  • Subagents
  • Automations
  • Skills
  • Code Execution
  • Computers
  • Computer Use
  • Cloud Computers
  • Local AI
  • AI Gateway
  • API & SDK
  • CLI
  • MCP
  • Tunnels
  • All features →
  • Blog
  • Use cases
  • Comparisons
  • Best of
  • Learn
  • Free tools
  • Prompts
  • Templates
  • Changelog
  • Help center
  • FAQ
  • Privacy
  • Compare all models
  • Support
  • Developers
  • Quickstarts
  • API reference
  • API pricing
  • CLI
  • MCP
  • Downloads
  • Desktop
  • Badges and embeds
© idapt[email protected]TermsPrivacy PolicyLegal noticeReport content
X (Twitter)