@@ -136,15 +136,16 @@ export const modelsExtra: Record<string, ModelData> = {
136136 } ,
137137
138138 // Claude Fable 5.1 - successor to Fable 5 in the Mythos-class tier at the same
139- // pricing/shape: $10/M input, $50/M output, cache write 1.25x input / cache read
140- // 0.1x input, native 1M context, 128K max output, native xhigh effort level.
139+ // input/output pricing: $10/M input, $50/M output, cache write 1.25x input. Cache
140+ // reads are cheaper than Fable 5 at $0.25/M (0.025x input, a quarter of the old
141+ // 0.1x ratio). Native 1M context, 128K max output, native xhigh effort level.
141142 "claude-fable-5-1" : {
142143 max_input_tokens : 1000000 ,
143144 max_output_tokens : 128000 ,
144145 input_cost_per_token : 0.00001 , // $10 per million input tokens
145146 output_cost_per_token : 0.00005 , // $50 per million output tokens
146147 cache_creation_input_token_cost : 0.0000125 , // $12.50 per million tokens (1.25× input)
147- cache_read_input_token_cost : 0.000001 , // $1.00 per million tokens (0.1 × input)
148+ cache_read_input_token_cost : 0.00000025 , // $0.25 per million tokens (0.025 × input)
148149 litellm_provider : "anthropic" ,
149150 mode : "chat" ,
150151 supports_function_calling : true ,
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