ByteDance Doubao vs Moonshot AI Kimi — API Comparison
Head-to-head comparison of pricing, features, and use case fit. Updated August 31, 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: ¥2/M cached, ¥20/M uncached; K2.7/K2.6: ¥1.10-¥1.30/M cached, ¥6.50/M uncached |
| Output Price | Seed-2.0: ¥2/M, Seed-2.0-lite: ¥1/M, Seed-2.0-mini: ¥0.6/M | K3: ¥100/M; K2.7/K2.6: ¥27/M |
| China Access | ✅ Direct access in China | ✅ Direct access intended for Mainland China |
| Free Tier | The ¥15 new-user coupon cannot be used for Kimi K3; recharge required | |
| Models | 8+ | 3+ |
| 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: 2.8T parameters, 1M-token context, native vision
- ✓ K3 supports Tool Calls, tool_choice, dynamic tool loading, and JSON Schema
- ✓ Automatic context caching for long-running coding agents
- ✓ K2.7 Code / K2.6 offer lower-cost 256K alternatives
⚠️ 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
- × High K3 output price (¥100/M)
- × K3 always reasons; reasoning_effort currently supports max only
- × Official docs say web search is being upgraded; not recommended for production
- × K3 is excluded from the ¥15 new-user coupon
🎯 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: ¥2/M cached, ¥20/M uncached; K2.7/K2.6: ¥1.10-¥1.30/M cached, ¥6.50/M uncached, Output: 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.