Anthropic keeps Fable 5.1 pricing at $10 per million input tokens and $50 per million output tokens, and trims cache‑read cost 75% to $0.25 per million.
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| Source: Techmeme | Original article
Anthropic keeps Fable 5.1 priced at $10 per M input tokens and $50 per M output tokens, matching Fable 5, while cutting cache‑read costs by 75% to $0.25 per M tokens.
Anthropic announced on Tuesday that the pricing for its newly launched Claude Fable 5.1 remains unchanged at $10 per million input tokens and $50 per million output tokens, matching the rates set for Fable 5. The company, however, slashed the cost of cache reads by 75 percent, dropping the fee to $0.25 per million cached input tokens.
The move follows Anthropic’s September 2 launch of the latest Fable and Mythos models, which were billed as up to 45 percent cheaper for agentic workloads. By keeping the base per‑token rates steady while making prompt‑caching dramatically cheaper, Anthropic is targeting developers who run repetitive or iterative tasks that benefit from re‑using cached context. The reduced cache price could shave a noticeable amount off total billings for applications that rely heavily on prompt engineering, potentially narrowing the cost gap with rival providers that have been trimming token prices across the board.
The pricing tweak arrives amid a broader industry trend of falling LLM costs. The LLM Token Expenditure Index reported an average price of $0.97 per million tokens on September 1, down from a peak of $2.07 in late May. Anthropic’s aggressive cache discount reinforces its strategy to stay competitive as token economics tighten and as the firm expands its infrastructure footprint through a $35 billion cloud deal with Nvidia‑backed Lambda.
What to watch next: whether Anthropic extends the cache discount to other model families, how developers adjust usage patterns in response, and if the price pressure prompts further reductions in input or output rates. The impact on the Token Expenditure Index and on Anthropic’s market share relative to emerging multimodal rivals will be key indicators of the move’s success.
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