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Claude Fable 5 vs GLM-5.3 API pricing

For a chat message (1K input, 500 output), GLM-5.3 costs $0.000779 per request and Claude Fable 5 costs $0.035, so GLM-5.3 is about 45× cheaper.

On the overall leaderboard Claude Fable 5 ranks #5 and GLM-5.3 ranks #15.

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 5GLM-5.3
Input$10$0.079
Output$50$1.4
Cached input$1$0.078
ProviderAnthropicZ.ai
Release date2026-06-092026-08-18
Overall rank#5#15
Coding rank#3#24
Reasoning rank#8#29
Knowledge rank#6—
Professional work rank#10#14
Verified2026-10-192026-10-19
Price sourcePrice sourcePrice source

Cost per request by usage

Without cache discounts or batch pricing.

UsageClaude Fable 5GLM-5.3Difference
Chat message1K in / 500 out$0.035$35 per 1,000$0.000779$0.78 per 1,000GLM-5.3 is 45× cheaper
Long document100K in / 2K out$1.1$1,100 per 1,000$0.0107$10.7 per 1,000GLM-5.3 is 103× cheaper
Agent session500K in / 50K out$7.5$7,500 per 1,000$0.11$109.5 per 1,000GLM-5.3 is 68× cheaper

More price comparisons