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Kimi K3 🪙 Open-Weight

by Moonshot AI · Text & Chat · Code

2.8T params · #1 Arena Frontend Code · 1M context · open-weight.

96/100AIVerso score
#7 of 49in Text & Chat
Free – APIStarting price
YesFree tier
Try Kimi K3 →Compare with alternatives →

At a glance

ProviderMoonshot AI
CategoryText & Chat, Code
Starting priceFree – API
Free tierYes
API accessYes
Open sourceYes
Context window1M tokens
Mobile appiOS & Android

Key facts

Capability ratings

Math & Logice.g. AIME, MATH-500
94
Programminge.g. SWE-bench, LiveCodeBench
90
Reasoninge.g. GPQA, ARC
91
Knowledgee.g. MMLU-Pro
89
Long Contexte.g. MRCR, needle tests
92
Instruction Followinge.g. IFEval
91
Agent Capabilitye.g. Terminal-Bench, tool use
86

AIVerso capability ratings (0–100), an editorial summary informed by public benchmark results. Higher is better.

Strengths

Top-tier AIVerso score (96/100)
Free tier available
Open source / open weights — self-hostable
Large 1M token context window
API access for developers
iOS & Android apps

Limitations

No notable limitations in our data

Best alternatives to Kimi K3

Claude Fable 5.1
Anthropic · $10/$50 per 1M tokens — Higher score (99 vs 96)
99
GPT-6 Astra
OpenAI · From $20/mo (Plus) — Higher score (98 vs 96)
98
Fugu Ultra v2
Sakana AI · $5/$30 per 1M tokens — Higher score (97 vs 96)
97
Gemini 3.1 Pro
Google · Free – $20/mo · free tier — Score 96/100
96
MiMo-V2.6-Pro
Xiaomi · Free (open weights) · $0.44/$0.87 per 1M · free tier — Score 96/100
MiMo-V2.6-Pro vs Kimi K3 →
96

🔗 Comparisons & guides

MiMo-V2.6-Pro vs Kimi K3Head-to-head comparison
DeepSeek V4-Pro vs Kimi K3Head-to-head comparison
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❓ Frequently Asked Questions

Is Kimi K3 free?

Yes — Kimi K3 has a free tier. Pricing: Free – API.

What are the best alternatives to Kimi K3?

The highest-rated AI chatbots & text models from other providers on AIVerso are Claude Fable 5.1 (99/100), GPT-6 Astra (98/100), Fugu Ultra v2 (97/100).

Does Kimi K3 have an API?

Yes, Kimi K3 can be used via an API.

Is Kimi K3 open source?

Yes — Kimi K3 is available as open source / open weights, so it can be self-hosted.

How does AIVerso rate Kimi K3?

Kimi K3 scores 96/100 on AIVerso and ranks #7 of 49 in Text & Chat. Scores combine public benchmark results, features and pricing; commissions never influence them.

How we rate: Scores and capability ratings are based on public benchmarks, provider documentation, features and pricing — not on commission rates. Prices can change; check the provider's site before buying. Last updated: September 29, 2026.