Kimi K3.1 Pro vs DeepSeek V4 Pro 0813: API Pricing, Limits & Cost Delta
Side-by-side 2026 engineering comparison between Moonshot Kimi K3.1 Pro and DeepSeek DeepSeek V4 Pro 0813—covering uncached input, cached prefix reads, output rates, max completion tokens, and live 30-day workload savings.
Interactive Workload Cost Delta Simulator
Side-by-Side Unit Price & Capability Matrix
| Dimension | Kimi K3.1 Pro | DeepSeek V4 Pro 0813 |
|---|---|---|
| Provider & Release Date | Moonshot (2026-10-23) | DeepSeek (2026-08-12) |
| Primary Workload Tier | Frontier Reasoning | Frontier Reasoning |
| Uncached Input ($ / 1M tokens) | $2 | $0.111 |
| Cached Prompt Read ($ / 1M tokens) | $0.2 | $0.097 |
| Output Completion ($ / 1M tokens) | $10 | $4.44 |
| 50% Async Batch API | Not listed | Not listed |
| Context Window (tokens) | 1,048,576 | 1,048,576 |
| Max Output Tokens | 943,718 | 943,718 |
| Function / Tool Calling | Supported | Supported |
| Strict JSON Schema Outputs | Supported | Supported |
| Reasoning Token Mode | Supported | Supported |
| Accepted Input Modalities | text, image, video | text |
Decision Rubric: When to Pick Kimi K3.1 Pro vs DeepSeek V4 Pro 0813
When to choose Kimi K3.1 Pro (Moonshot)
Select Kimi K3.1 Pro when your workload prioritizes its Frontier Reasoning profile ($2/1M input, $0.2/1M cached read, $10/1M output) with up to 1,048,576 context tokens and 943,718 max output tokens (real-time synchronous execution).
Kimi K3.1 Pro full pricing sheet →When to choose DeepSeek V4 Pro 0813 (DeepSeek)
Select DeepSeek V4 Pro 0813 when your workload prioritizes its Frontier Reasoning profile ($0.111/1M input, $0.097/1M cached read, $4.44/1M output) with up to 1,048,576 context tokens and 943,718 max output tokens (real-time synchronous execution).
DeepSeek V4 Pro 0813 full pricing sheet →Frequently Asked Questions
Is Kimi K3.1 Pro cheaper than DeepSeek V4 Pro 0813 for production API workloads?
On standard uncached rates, Kimi K3.1 Pro bills $2/1M input and $10/1M output versus DeepSeek V4 Pro 0813 at $0.111/1M input and $4.44/1M output. On a typical 1,000 calls/day workload (4,000 input tokens at 50% cache hit + 800 output tokens), DeepSeek V4 Pro 0813 saves $252.96/month (68% lower).
How do Kimi K3.1 Pro and DeepSeek V4 Pro 0813 compare on context window and max output tokens?
Kimi K3.1 Pro offers a 1,048,576-token context window with 943,718 max output tokens (text, image, video), while DeepSeek V4 Pro 0813 provides a 1,048,576-token context window with 943,718 max output tokens (text).
Can I switch between Kimi K3.1 Pro and DeepSeek V4 Pro 0813 with strict JSON Schema tool calling?
Both models can be evaluated locally in DevToken: Kimi K3.1 Pro (tools: Supported, strict JSON Schema: Supported) vs DeepSeek V4 Pro 0813 (tools: Supported, strict JSON Schema: Supported). Always verify rate-limit headroom in the 429 Calculator before cutover.