Kimi K3 vs GPT-5.6 Sol

Kimi K3 from Moonshot AI and GPT-5.6 Sol from OpenAI 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 value default, with about 43% lower input cost and 52% lower output cost. GPT-5.6 Sol becomes more competitive at maximum reasoning effort and is the better fit when PDF input or an OpenAI-centered workflow is required.

Comparison Highlights

Kimi K3Moonshot AI
GPT-5.6 SolOpenAI
Best For
High-value codingmultimodal agentslong-context work
General automationPDF workflowsadjustable reasoning effort
How To Read ItUse-case synthesis from model capabilities and positioning.
Workload Fit
CodingMultimodalCost control
General usePDFOpenAI workflows
How To Read ItThe workloads each model is most directly shaped for.
Input
$2.8571/MEdge
$5/M
How To Read ItLower is better when prompts or retrieval payloads are large.
Output
$14.2857/MEdge
$30/M
How To Read ItLower is better for reasoning-heavy or long-generation traffic.
Context length
1M
1.1M
How To Read ItHigher is better for repositories, retrieval packs, and transcripts.
Input modalities
Text, Image
Text, Image, PDFEdge
How To Read ItBroader input support reduces the need for separate vision or video models.

Model Selection Guide

Kimi K3Moonshot AI

Choose Kimi K3 When

  • $2.8571 input and $14.2857 output per million tokens, versus $5 and $30
  • A 76.2 Coding Index and 57.1 Intelligence Index at the listed Kimi profile
  • Text, image, and video input with a 1M-class context window
GPT-5.6 SolOpenAI

Choose GPT-5.6 Sol When

  • At maximum effort, a 77.4 Coding Index and 58.9 Intelligence Index
  • Text, image, and PDF input with a 128K maximum output
  • A flexible standard model for general Q&A, automation, and batch processing

Basic Information

Kimi K3Moonshot AI
GPT-5.6 SolOpenAI

Name

Kimi K3Kimi K3

Model id

Kimi K3kimi-k3

Intro

Kimi K3Kimi K3 is a high-performance AI model designed for advanced reasoning, coding, and complex task execution. It delivers strong performance on large-scale programming projects, multi-step problem solving, and knowledge-intensive applications. With broad context handling and multimodal capabilities, K3 is suitable for building powerful AI agents, developer tools, and enterprise-level applications.

Author

Kimi K3Moonshot AI

Released date

Kimi K32026-07-16

Context length

Kimi K31M

Max output tokens

Kimi K3131.1K

Name

GPT-5.6 SolGPT-5.6 Sol

Model id

GPT-5.6 Solgpt-5.6-sol

Intro

GPT-5.6 SolGPT-5.6 Sol is the standard version of the Sol series. It is suitable for general Q&A, text processing, content drafting, summarization, lightweight coding assistance, and business automation tasks. Sol is designed for scenarios that need solid general capability while keeping response efficiency and cost in mind. It can be used for product features, chat assistants, content-generation tools, data cleaning, knowledge-base Q&A, and batch-processing tasks. For large-scale usage or rapid prototyping, Sol is a flexible starting point.

Author

GPT-5.6 SolOpenAI

Released date

GPT-5.6 Sol2026-07-09

Context length

GPT-5.6 Sol1.1M

Max output tokens

GPT-5.6 Sol128K

Pricing

Kimi K3Moonshot AI
GPT-5.6 SolOpenAI

Input

Kimi K3$2.8571/M

Output

Kimi K3$14.2857/M

Cached input

Kimi K3$0.2857/M

Input

GPT-5.6 Sol$5/M

Output

GPT-5.6 Sol$30/M

Cached input

GPT-5.6 Sol$0.5/M

Capabilities

Kimi K3Moonshot AI
GPT-5.6 SolOpenAI

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

Reasoning

GPT-5.6 Sol

Knowledge

GPT-5.6 Sol2026-02-16

Attachment

GPT-5.6 Sol

Input modalities

GPT-5.6 SolText, Image, PDF

Output modalities

GPT-5.6 SolText

Temperature

GPT-5.6 Sol

Tool use

GPT-5.6 Sol

Benchmark

Intelligence

wins

57.1

Kimi K3

49.4

GPT-5.6 Sol

Coding

wins

76.2

Kimi K3

69.7

GPT-5.6 Sol

Kimi K3Moonshot AI
GPT-5.6 SolOpenAI

Knowledge & Reasoning

GPQA

wins93.5%

HLE

wins44.3%

GPQA

89.8%

HLE

36.6%

Coding

SciCode

wins58.7%

Terminal-Bench Hard

n/a

SciCode

55.4%

Terminal-Bench Hard

wins60.6%

Instruction Following & Agent Tasks

IFBench

n/a

AA-LCR

wins74.7%

Tau2

n/a

IFBench

wins66.5%

AA-LCR

67.7%

Tau2

wins76.0%

FAQ

Which model is better, Kimi K3 or GPT-5.6 Sol?+

Kimi K3 and GPT-5.6 Sol should be compared by workload. This page places price, context, output limits, capabilities, and benchmark data side by side. It is also relevant to: kimi k3 vs gpt-5.6 sol, kimi k3 vs chatgpt, kimi vs chatgpt.

Is GPT-5.6 Sol cheaper than Kimi K3?+

Use the pricing rows above to compare input, output, and cached input prices for Kimi K3 and GPT-5.6 Sol.

Which model supports a longer context length?+

Kimi K3 lists 1M context length, while GPT-5.6 Sol lists 1.1M.

Can I access both models through TokenHub?+

If both models are available in the TokenHub catalog, you can route requests to Kimi K3 and GPT-5.6 Sol through the TokenHub API.