Compare

Kimi K3 vs Claude Haiku 5.5

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 K3
moonshot/kimi-k3
Claude Haiku 5.5
anthropic/claude-haiku-5.5
Provider
Moonshot
Anthropic
Family
Claude 4
Modality
text
text
Context window
1,048,576 tok
1,000,000 tok
Max output
32,768 tok
128,000 tok
Released
2026-07-16
2026-10-12
License
Open-weight
Proprietary
Input price
$3.00 /1M
$0.100 /1M
Output price
$15.00 /1M
$0.500 /1M
Tools
yes
yes
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
yes
Reasoning
yes
—
Prompt caching
—
—
Batch API
—
—
Try it
Open in playground →
Open in playground →
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
Claude Haiku 5.5
anthropic/claude-haiku-5.5
Full spec →

Claude Haiku 5.5 is a fast, cost-efficient model for high-volume, latency-sensitive tasks such as classification, extraction, routing, and subagent work.

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

Compare with another

Gemini 4 Argon vs Kimi K3
google/gemini-4-argon · moonshot/kimi-k3
Gemini 4 Argon vs Claude Haiku 5.5
google/gemini-4-argon · anthropic/claude-haiku-5.5
Claude Sonnet 5.5 vs Kimi K3
anthropic/claude-sonnet-5.5 · moonshot/kimi-k3
Claude Sonnet 5.5 vs Claude Haiku 5.5
anthropic/claude-sonnet-5.5 · anthropic/claude-haiku-5.5
GPT-6.1 Sol vs Kimi K3
openai/gpt-6.1-sol · moonshot/kimi-k3
GPT-6.1 Sol vs Claude Haiku 5.5
openai/gpt-6.1-sol · anthropic/claude-haiku-5.5
Claude Opus 5.5 vs Kimi K3
anthropic/claude-opus-5.5 · moonshot/kimi-k3
Claude Opus 5.5 vs Claude Haiku 5.5
anthropic/claude-opus-5.5 · anthropic/claude-haiku-5.5
Grok 4.7 vs Kimi K3
xai/grok-4.7 · moonshot/kimi-k3
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 K3
client.chat.completions.create(
    model="moonshot/kimi-k3",
    messages=[{"role":"user","content":"hello"}],
)

# Claude Haiku 5.5
client.chat.completions.create(
    model="anthropic/claude-haiku-5.5",
    messages=[{"role":"user","content":"hello"}],
)
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