Grok 4.3 vs Kimi K3.1 Pro
Short answer
Grok 4.3 is about 3x cheaper than Kimi K3.1 Pro for a typical 3:1 input-to-output token mix ($1.56 vs $4 per 1M tokens).
Prices updated Nov 1, 2026 (APIpulse, CC BY 4.0) · Benchmarks: ARC Prize, Vals.ai · all models
| Grok 4.3cheaper | Kimi K3.1 Pro | |
|---|---|---|
| Provider | xAI | Moonshot |
| Input / 1M tokens | $1.25 | $2 |
| Output / 1M tokens | $2.50 | $10 |
| Blended (3:1) / 1M | $1.56 | $4 |
| Context window | 1M | 1M |
| ARC-AGI-2 | — | — |
| SWE-bench Verified | 71.4% | — |
API cost calculator
Enter your monthly usage in millions of tokens (1M tokens ≈ 750,000 words).
Grok 4.3cheapest$17.50 / month$210 / year
Kimi K3.1 Pro$40 / month$480 / year
Standard rates; batch processing and prompt caching can lower the bill.
Frequently asked questions
Which is cheaper, Grok 4.3 or Kimi K3.1 Pro?
Grok 4.3 is about 3x cheaper than Kimi K3.1 Pro for a typical 3:1 input-to-output token mix ($1.56 vs $4 per 1M tokens)..
How much do Grok 4.3 and Kimi K3.1 Pro cost per month?
For 10M input and 2M output tokens a month: Grok 4.3 costs $17.50 and Kimi K3.1 Pro costs $40.
More: Grok 4.3 pricing · Kimi K3.1 Pro pricing · all API prices
Benchmarks updated Nov 2, 2026.