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Kimi-K2.6 vs Kimi K3

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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Kimi-K2.6
moonshot/kimi-k2.6
Kimi K3
moonshot/kimi-k3
Provider
Moonshot
Moonshot
Family
Kimi
Modality
text
text
Context window
262,144 tok
1,048,576 tok
Max output
16,384 tok
32,768 tok
Released
2026-04-20
2026-07-16
License
Open-weight
Open-weight
Input price
$0.950 /1M
$3.00 /1M
Output price
$4.00 /1M
$15.00 /1M
Cache read
$0.160 /1M
Tools
yes
yes
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
yes
Reasoning
yes
yes
Prompt caching
yes
Batch API
Try it
Open in playground →
Open in playground →
Kimi-K2.6
moonshot/kimi-k2.6
Full spec →

Kimi K2.6 is a frontier-scale open-source 1T parameter model with a 262.1k context window, multi-turn tool calling, vision inputs, and structured outputs for agentic workloads.

Strengths
  • Frontier-scale 1T parameters, open-weight
  • ~10× cheaper than Opus
  • Multi-turn tool calling + vision
Use cases
Code agentsLong-document reasoningCost-conscious production
Kimi K3
moonshot/kimi-k3
Full spec →

Kimi K3 is Moonshot's flagship 2.8 trillion-parameter model, built on Kimi Delta Attention (a hybrid linear attention mechanism) with Attention Residuals. It offers native visual understanding, always-on reasoning, and a 1M-token context window for long-horizon coding, knowledge work, and deep reasoning tasks.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Benchmarks

Kimi-K2.6
Kimi K3
HumanEval
92.7
SWE-Bench
68.2

Source: each provider's published benchmarks. Higher is better. Run an eval to compare on your own data.

Compare with another

Kimi-K2.6 vs Kimi-K2.7-Code
moonshot/kimi-k2.6 · moonshot/kimi-k2.7-code
Claude Opus 5 vs Kimi K3
anthropic/claude-opus-5 · moonshot/kimi-k3
Claude Opus 5 vs Kimi-K2.6
anthropic/claude-opus-5 · moonshot/kimi-k2.6
Grok 4.5 vs Kimi K3
xai/grok-4.5 · moonshot/kimi-k3
Grok 4.5 vs Kimi-K2.6
xai/grok-4.5 · moonshot/kimi-k2.6
Kimi K3 vs Gemini 3.6 Flash
moonshot/kimi-k3 · google/gemini-3.6-flash
Kimi K3 vs GPT-5.6 Sol
moonshot/kimi-k3 · openai/gpt-5.6-sol
Kimi K3 vs Claude Fable 5
moonshot/kimi-k3 · anthropic/claude-fable-5
Kimi K3 vs DeepSeek V4 Pro
moonshot/kimi-k3 · deepseek/deepseek-v4-pro
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Kimi-K2.6
client.chat.completions.create(
    model="moonshot/kimi-k2.6",
    messages=[{"role":"user","content":"hello"}],
)

# Kimi K3
client.chat.completions.create(
    model="moonshot/kimi-k3",
    messages=[{"role":"user","content":"hello"}],
)
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