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Claude Fable 5.2 vs Kimi K3.1 Pro API pricing

For a chat message (1K input, 500 output), Kimi K3.1 Pro costs $0.00444 per request and Claude Fable 5.2 costs $0.028, so Kimi K3.1 Pro is about 6.3× cheaper.

On the overall leaderboard Claude Fable 5.2 ranks #1 and Kimi K3.1 Pro ranks #5.

Prices are the standard pay-as-you-go prices in OpenRouter's public model list, with input at the cache-miss price. Models OpenRouter does not list use the vendor's official price; those listed in CNY are converted to USD at this round's exchange rate.

Prices and rankings

USD per million tokensClaude Fable 5.2Kimi K3.1 Pro
Input$8$0.24
Output$40$8.41
Cached input$0.2$0.2
ProviderAnthropicKimi
Release date2026-11-092026-10-23
Overall rank#1#5
Coding rank——
Reasoning rank——
Knowledge rank#1—
Professional work rank——
Verified2026-11-132026-11-13
Price sourcePrice sourcePrice source

Cost per request by usage

Without cache discounts or batch pricing.

UsageClaude Fable 5.2Kimi K3.1 ProDifference
Chat message1K in / 500 out$0.028$28 per 1,000$0.00444$4.44 per 1,000Kimi K3.1 Pro is 6.3× cheaper
Long document100K in / 2K out$0.88$880 per 1,000$0.0406$40.57 per 1,000Kimi K3.1 Pro is 22× cheaper
Agent session500K in / 50K out$6$6,000 per 1,000$0.54$539.32 per 1,000Kimi K3.1 Pro is 11× cheaper

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