DeepSeek V4 Pro vs Kimi K2.6
DeepSeek V4 Pro and Kimi K2.6 are close open-weights coding models with different production bets: DeepSeek V4 Pro brings a 1m-token text-only context window and temporary discounted API pricing through 2026-05-31, while Kimi K2.6 brings native multimodal input and stronger SWE-bench Pro results for long-horizon agent work.
Pick DeepSeek V4 Pro for pure code generation, large-codebase analysis, and the lowest per-token cost before its 75% discount expires on 2026-05-31. Pick Kimi K2.6 when your pipeline processes images, screenshots, PDFs, or spreadsheets, or when you need long agent runs with many sequential tool calls.
Decision scorecard
Local evidence first| Signal | DeepSeek V4 Pro | Kimi K2.6 |
|---|---|---|
| Product type | Standalone API model | Coding-specialized model |
| Best for | reasoning-heavy apps, tool-calling agents, and long-context analysis | custom coding agents, code generation, and tool loops |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 1m | 262k |
| Cheapest output | $0.87/1M tokens | $3.49/1M tokens |
| Provider routes | 5 tracked | 9 tracked |
| Shared benchmarks | MMLU PRO leader | 12 shared |
Decision tradeoffs
- DeepSeek V4 Pro holds a shared-benchmark lead on MMLU PRO, ahead by 2.9 points.
- DeepSeek V4 Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- DeepSeek V4 Pro has the lower cheapest tracked output price at $0.87/1M tokens.
- Local decision data tags DeepSeek V4 Pro for Coding, RAG, and Agents.
- Kimi K2.6 holds a shared-benchmark lead on SWE-bench Pro, ahead by 3.2 points.
- Kimi K2.6 has broader tracked provider coverage for fallback and route flexibility.
- Kimi K2.6 uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Kimi K2.6 for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek V4 Pro
$566
Cheapest tracked route/tier: DeepSeek Platform
Kimi K2.6
$1,457
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $891. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Fireworks AI, OpenRouter, and Vercel AI Gateway; start route-level A/B tests there.
- Kimi K2.6 is $2.62/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Kimi K2.6 adds Vision and Multimodal in local capability data.
- Provider overlap exists on Fireworks AI, OpenRouter, and Vercel AI Gateway; start route-level A/B tests there.
- DeepSeek V4 Pro is $2.62/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-24 | 2026-04-20 |
| Context window | 1m | 262k |
| Parameters | 1.6T | 1T |
| Architecture | Mixture of Experts | Mixture of Experts |
| License | MITOSI-approved | MITOSI-approved |
| Openness | Open source | Open source |
| Weights | Available | Available·Moonshot Modified MIT License |
| Code | Unknown | Available·Moonshot Modified MIT License |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | - | 2025-04 |
Pricing and availability
| Pricing attribute | DeepSeek V4 Pro | Kimi K2.6 |
|---|---|---|
| Input price | $0.43/1M tokens | $0.73/1M tokens |
| Output price | $0.87/1M tokens | $3.49/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek V4 Pro | Kimi K2.6 |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | DeepSeek V4 Pro | Kimi K2.6 |
|---|---|---|
| MMLU PRO | 87.5 | 84.6 |
| SWE-bench Verified | 80.6 | 80.2 |
| SWE-bench Pro | 55.4 | 58.6 |
| Google-Proof Q&A | 90.1 | 90.5 |
| LiveCodeBench | 93.5 | 89.6 |
| Humanity's Last Exam | 37.7 | 34.7 |
| MCP-Atlas | 69.4 | 55.9 |
| Terminal-Bench 2.0 | 59.1 | 66.7 |
| Chatbot Arena | 1456.0 | 1462.0 |
| GeneBench-Pro | 2.4 | 4.4 |
| SWE-bench Multilingual | 76.2 | 76.7 |
| BrowseComp | 83.4 | 83.2 |
Continue comparing
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Last reviewed: 2026-06-30. Data sourced from public model cards and provider documentation.