Claude Sonnet 5 vs Kimi K3

Claude Sonnet 5 from Anthropic and Kimi K3 from Moonshot AI are shown side by side so you can compare pricing, model IDs, context and output limits, modalities, tool use, release details, and benchmark results where data is available.

Overall Recommendation

Kimi K3 is the stronger capability default in TokenHub data, with a 57.1 Intelligence Index and 76.2 Coding Index versus 53.4 and 71.5 for Claude Sonnet 5. Choose Sonnet 5 when roughly 30% lower token prices, PDF input, or an Anthropic-centered workflow matters more.

Comparison Highlights

Claude Sonnet 5Anthropic
Kimi K3Moonshot AI
Best For
Cost-efficient codingPDF workflowsbalanced professional agents
Advanced multimodal codingvisual agentslong-context work
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
ValuePDFProfessional work
MultimodalCodingLong context
How To Read ItThe workloads each model is most directly shaped for.
Input
$2/MEdge
$2.8571/M
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$10/MEdge
$14.2857/M
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1M
1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Text, Image, PDFEdge
Text, Image
How To Read ItBroader input support reduces the need for separate vision or video models.

Model Selection Guide

Claude Sonnet 5Anthropic

Choose Claude Sonnet 5 When

  • $2 input and $10 output per million tokens, about 30% below Kimi K3
  • Text, image, and PDF input with a 1M context window and 128K output
  • Selectable reasoning effort in Anthropic coding and agent workflows
Kimi K3Moonshot AI

Choose Kimi K3 When

  • A 57.1 Intelligence Index and 76.2 Coding Index, versus 53.4 and 71.5
  • Text, image, and video input with a 1.048M context window
  • A slightly larger 131.1K maximum output for long generations

Basic Information

Claude Sonnet 5Anthropic
Kimi K3Moonshot AI

Name

Claude Sonnet 5Claude Sonnet 5

Model id

Claude Sonnet 5claude-sonnet-5

Data source

Claude Sonnet 5TokenHub production catalog

Intro

Claude Sonnet 5Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max, and x-high), a 1M-token context window, and text, image, and file inputs. Sonnet 5 uses an updated tokenizer and includes real-time cyber safeguards that block certain high-risk dual-use activities.

Author

Claude Sonnet 5Anthropic

Released date

Claude Sonnet 52026-06-30

Context length

Claude Sonnet 51M

Max output tokens

Claude Sonnet 5128K

Name

Kimi K3Kimi K3

Model id

Kimi K3kimi-k3

Data source

Kimi K3TokenHub production catalog

Intro

Kimi K3Kimi K3 is Moonshot AI’s flagship model for long-context coding, complex reasoning, and knowledge work. With native vision and a 1M-token context window, the Kimi K3 API is designed for repository analysis, document research, multi-step agent workflows, and production AI applications. Use TokenHub to review Kimi K3 price, API access, model capabilities, and benchmark results before choosing it for your workload.

Author

Kimi K3Moonshot AI

Released date

Kimi K32026-07-16

Context length

Kimi K31M

Max output tokens

Kimi K3131.1K

Pricing

Claude Sonnet 5Anthropic
Kimi K3Moonshot AI

Input

Claude Sonnet 5$2/M

Output

Claude Sonnet 5$10/M

Cached input

Claude Sonnet 5$0.2/M

Input

Kimi K3$2.8571/M

Output

Kimi K3$14.2857/M

Cached input

Kimi K3$0.2857/M

Capabilities

Claude Sonnet 5Anthropic
Kimi K3Moonshot AI

Reasoning

Claude Sonnet 5

Knowledge

Claude Sonnet 52026-01-31

Attachment

Claude Sonnet 5

Input modalities

Claude Sonnet 5Text, Image, PDF

Output modalities

Claude Sonnet 5Text

Temperature

Claude Sonnet 5

Tool use

Claude Sonnet 5

Reasoning

Kimi K3

Knowledge

Kimi K3n/a

Attachment

Kimi K3

Input modalities

Kimi K3Text, Image

Output modalities

Kimi K3Text

Temperature

Kimi K3

Tool use

Kimi K3

Benchmark

Claude Sonnet 5Anthropic
Kimi K3Moonshot AI

Intelligence

41.7

Coding

66.4

Intelligence

wins57.1

Coding

wins76.2

Knowledge & Reasoning

GPQA

80%

HLE

17.8%

GPQA

wins93.5%

HLE

wins44.3%

Coding

SciCode

48.6%

SciCode

wins58.7%

Instruction Following & Agent Tasks

AA-LCR

58.7%

AA-LCR

wins74.7%

FAQ

Which model is better, Claude Sonnet 5 or Kimi K3?

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Neither model is universally better. Start with the Model Selection Guide above to match each model to your task, then use pricing, context length, maximum output, and capability rows to confirm the operational fit.

Is Kimi K3 cheaper than Claude Sonnet 5?

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Use the pricing rows above to compare input, output, and cached input prices for Claude Sonnet 5 and Kimi K3.

Which model supports a longer context length?

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Claude Sonnet 5 lists 1M context length, while Kimi K3 lists 1M.

Can I access both models through TokenHub?

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If both models are available in the TokenHub catalog, you can route requests to Claude Sonnet 5 and Kimi K3 through the TokenHub API.