ByteDance Doubao vs Moonshot AI Kimi — API Comparison
Head-to-head comparison of pricing, features, and use case fit. Updated November 5, 2026.
⚡ Verdict: ByteDance wins on price; Kimi wins on context window and brand.
💰 Pricing Comparison
| Metric | ByteDance Doubao | Moonshot AI Kimi |
|---|---|---|
| Input Price | Seed-2.0: ¥0.8/M, Seed-2.0-lite: ¥0.5/M, Seed-2.0-mini: ¥0.15/M | K3.1 Pro: ¥13/M 未命中、¥1.30/M 缓存命中；Highspeed ¥26/M；K3: ¥20/M、¥2/M 缓存；K2.7/K2.6: ¥6.50/M |
| Output Price | Seed-2.0: ¥2/M, Seed-2.0-lite: ¥1/M, Seed-2.0-mini: ¥0.6/M | K3.1 Pro: ¥68/M；Highspeed ¥136/M；K3: ¥100/M；K2.7/K2.6: ¥27/M |
| China Access | ✅ Direct access in China | ✅ Direct access intended for Mainland China |
| Free Tier | New-user credit cannot be spent on the K3 series; K3 models unlock after a minimum $1 top-up, with rate-limit tiers set by cumulative recharge | |
| Models | 8+ | 5+ |
| Overall Rank | #12 | #9 |
🤖 Supported Models
ByteDance Doubao
Moonshot AI Kimi
✨ Pros
ByteDance Doubao
- ✓ Doubao Seed-2.0 major update, significant performance boost
- ✓ Seed-2.0-mini ¥0.15/M input, ultra-low pricing
- ✓ Deep TikTok/Feishu ecosystem integration
- ✓ Real-time voice models (RealtimeVoice/TTS) industry-leading
- ✓ Fast speed (Seed-2.0 first token <300ms)
- ✓ Volcengine platform stability, 99.95% SLA
Moonshot AI Kimi
- ✓ Kimi K3.1 Pro: 3T-class open-weight flagship, 1M-token context, native vision; vendor reports 65.7% on Terminal-Bench 4.0
- ✓ K3 series supports low/high/max reasoning_effort, tool calls, tool_choice, dynamic tools, and JSON Schema
- ✓ Cache hits at 10% of input price for repository-scale agents; Batch API at 60% of standard rate
- ✓ K3.1 Pro Highspeed is the same model at ~2-3x speed; K2.7 Code/K2.6 are the 256K budget options (retiring end of 2026)
⚠️ Cons
ByteDance Doubao
- × Volcengine platform setup complex
- × API not fully OpenAI-compatible
- × Documentation primarily in Chinese
- × Many models but unclear positioning
- × Overseas access needs Volcengine international site
Moonshot AI Kimi
- × The K3 series always reasons; there is no no-thinking mode
- × Highspeed output is expensive (CNY 136 / $20 per 1M)
- × K3 models require a top-up to unlock; new-user credit is not eligible
- × Official docs flag web search as still being upgraded; use cautiously in production
🎯 Best For
ByteDance Doubao
TikTok/Feishu ecosystem integration; low-latency real-time scenarios; voice I/O conversational apps
Moonshot AI Kimi
China-based developers needing 1M context, vision, and long-running agents; long documents and repository-scale coding
❓ FAQ
Which is cheaper, ByteDance Doubao or Moonshot AI Kimi? ▼
ByteDance Doubao — Input: Seed-2.0: ¥0.8/M, Seed-2.0-lite: ¥0.5/M, Seed-2.0-mini: ¥0.15/M, Output: Seed-2.0: ¥2/M, Seed-2.0-lite: ¥1/M, Seed-2.0-mini: ¥0.6/M. Moonshot AI Kimi — Input: K3.1 Pro: ¥13/M 未命中、¥1.30/M 缓存命中；Highspeed ¥26/M；K3: ¥20/M、¥2/M 缓存；K2.7/K2.6: ¥6.50/M, Output: K3.1 Pro: ¥68/M；Highspeed ¥136/M；K3: ¥100/M；K2.7/K2.6: ¥27/M.
Which is better for China access? ▼
ByteDance Doubao: ✅ Direct access in China. Moonshot AI Kimi: ✅ Direct access intended for Mainland China.
What is the overall verdict? ▼
ByteDance wins on price; Kimi wins on context window and brand.