ANTHROPIC VS MOONSHOT AI
Claude Fable 5 vs Kimi K2 Thinking
Kimi K2 Thinking is about 19x cheaper than Claude Fable 5 on a blended 3:1 input:output rate — the same 10K-in/2K-out request costs $0.011 vs $0.20. Claude Fable 5 has the larger context window (1,000,000 vs 262,144 tokens).
Pricing verified
API pricing per 1M tokens
| Model | Input / 1M tokens | Output / 1M tokens | Blended (3:1 mix) |
|---|---|---|---|
| Claude Fable 5 | $10.00 | $50.00 | $20.00 |
| Kimi K2 Thinking | $0.60 | $2.50 | $1.075 |
Rates from official Anthropic pricing and official Moonshot AI pricing, checked 2026-08-11.
What a real workload costs
Example: one request with 10,000 input tokens and 2,000 output tokens, then that request at 100,000 runs per month.
| Model | Per request (10K in / 2K out) | Per month (100K requests) | Monthly delta |
|---|---|---|---|
| Claude Fable 5 | $0.20 | $20,000 | +$18,900 |
| Kimi K2 Thinking | $0.011 | $1,100 | — |
Model your own prompt sizes and volumes in the token cost analyzer, or check caching savings with the prompt caching calculator.
Specs side by side
| Spec | Claude Fable 5 | Kimi K2 Thinking |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Context window | 1,000,000 tokens | 262,144 tokens |
| Model class | Reasoning | Reasoning |
| Tokenizer | Proprietary (counts estimated) | Proprietary (counts estimated) |
Count tokens for each model on its own page: Claude Fable 5 token counter and Kimi K2 Thinking token counter. All Anthropic models are on the Claude Token Counter. All Moonshot AI models are on the Kimi Token Counter.
FAQ
Claude Fable 5 vs Kimi K2 Thinking FAQ
Which is cheaper, Claude Fable 5 or Kimi K2 Thinking?
Kimi K2 Thinking is cheaper. At rates checked 2026-08-11, Claude Fable 5 costs $10.00 input / $50.00 output per 1M tokens, while Kimi K2 Thinking costs $0.60 input / $2.50 output — about a 19x difference on a typical 3:1 input-heavy workload.
How much does a real request cost on Claude Fable 5 vs Kimi K2 Thinking?
A request with 10,000 input tokens and 2,000 output tokens costs about $0.20 on Claude Fable 5 and $0.011 on Kimi K2 Thinking. At 100,000 such requests per month that is $20,000 vs $1,100 — a difference of $18,900 per month.
Which has the bigger context window, Claude Fable 5 or Kimi K2 Thinking?
Claude Fable 5. It supports 1,000,000 tokens of context versus 262,144 tokens — roughly 750,000 English words in one request.
Do Claude Fable 5 and Kimi K2 Thinking count tokens the same way?
Not exactly. Claude Fable 5 uses a proprietary tokenizer (counts are estimates) and Kimi K2 Thinking uses a proprietary tokenizer (counts are estimates). The same prompt will tokenize differently, which shifts effective cost per word.