KIMI K2.6 vs DeepSeek V4
Comprehensive comparison between Moonshot AI's KIMI K2.6 and DeepSeek's DeepSeek V4. Compare pricing, performance, features, and user reviews.
KIMI K2.6
Moonshot AIMoonshot AI's latest open-weight flagship released April 13, 2026. A 1T-parameter MoE with 32B active per token and 256K context. Can dynamically scale to 300 sub-agents executing 4,000 coordinated steps, supporting 12-hour coding sessions. Outperforms GPT-5.4 and Claude Opus 4.6 on several coding benchmarks while being 5-6x cheaper than Sonnet 4.6.
DeepSeek V4
DeepSeekDeepSeek V4 (released 2026-04-24) ships two MIT-licensed MoE variants: V4-Pro (1.6T/49B active) and V4-Flash (284B/13B active), both with 1M-token context and hybrid Compressed Sparse Attention + Heavily Compressed Attention. Three reasoning modes (Non-think / Think High / Think Max). V4-Pro uses only 27% of V3.2's FLOPs and 10% of its KV cache at 1M context. Priced well below GPT-5.5 / Opus 4.7 while matching them on most benchmarks.
Specs Comparison
| Specification | KIMI K2.6 | DeepSeek V4 |
|---|---|---|
| Context Window | 256K | 1000K |
| Max Output | 0K | 66K |
| Input (per 1M tokens) | $0.60 | $1.74 |
| Output (per 1M tokens) | $2.50 | $3.48 |
| Reasoning | ||
| Open Source |
Scenario Score Comparison
KIMI K2.6
Pros
- + Open-weight from day 1
- + Leads SWE-Bench Verified at 80.2%
- + 5-6x cheaper than Claude Sonnet 4.6
- + 300 parallel sub-agents (3x K2.5)
- + 12-hour autonomous coding sessions
Cons
- − Text only, no multimodal yet
- − 1T params require serious GPU infrastructure to self-host
- − Community data still limited (released just days ago)
DeepSeek V4
Pros
- + 1M token context window with aggressive KV-cache compression
- + MIT license — fully open-source, self-hostable
- + V4-Pro $1.74/$3.48 per MTok — far cheaper than GPT-5.5 and Opus 4.7
- + New SOTA for open models on SimpleQA-Verified (57.9)
- + OpenAI + Anthropic API-compatible endpoints
- + Three reasoning modes tunable per request
Cons
- − Still trails GPT-5.4 / Gemini 3.1 Pro by 3-6 months on frontier benchmarks
- − Servers in China (overseas latency, geopolitical concerns)
- − Text-only — V3's multimodal (image/video) capability not confirmed for V4
- − V4-Pro self-hosting needs substantial hardware (49B active × FP4/FP8)
Recommendation
Choose KIMI K2.6 if you:
- • Need open-weight from day 1
- • Need leads swe-bench verified at 80.2%
- • Need 5-6x cheaper than claude sonnet 4.6
Choose DeepSeek V4 if you:
- • Need 1m token context window with aggressive kv-cache compression
- • Need mit license — fully open-source, self-hostable
- • Need v4-pro $1.74/$3.48 per mtok — far cheaper than gpt-5.5 and opus 4.7
Based on scores across 5 scenarios, KIMI K2.6 performs better overall.
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