Kimi K3.1 Pro vs Qwen3.8 Flash
Price, context window & benchmark comparison
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Verdict: Qwen3.8 Flash is 17.4× cheaper than Kimi K3.1 Pro on a typical 3:1 input/output mix. Kimi K3.1 Pro has the larger context window (1M vs 1M).
| Kimi K3.1 Pro | Qwen3.8 Flash | |
|---|---|---|
| Input price / 1M | $2.00 | $0.15 |
| Output price / 1M | $10.00 | $0.47 |
| Blended price (3:1) | $4.00 | $0.23 |
| Cached input / 1M | $0.20 | $0.016 |
| Context window | 1M | 1M |
| Max output | 944K | 131K |
| Intelligence index | 46.5 | — |
| Coding index | — | — |
| Providers | 23 | 2 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-10-23 | 2026-08-26 |
| Retirement | — | — |
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FAQ
Which is cheaper, Kimi K3.1 Pro or Qwen3.8 Flash?
Qwen3.8 Flash is 17.4× cheaper than Kimi K3.1 Pro on a typical 3:1 input/output mix.
Kimi K3.1 Pro vs Qwen3.8 Flash: which has a bigger context window?
Kimi K3.1 Pro: 1,048,576 tokens. Qwen3.8 Flash: 1,000,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Kimi K3.1 Pro ≈ $9,000, Qwen3.8 Flash ≈ $535.00.
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