Claude Fable 5 vs DeepSeek V4 Pro — Side-by-side pricing
Side-by-side API pricing and tokenizer details for Claude Fable 5 (Anthropic) and DeepSeek V4 Pro (DeepSeek).
Side-by-side pricing
| Feature | Claude Fable 5 | DeepSeek V4 Pro |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Input (per 1M tokens) | $10.00 | $0.435 |
| Output (per 1M tokens) | $50.00 | $0.870 |
| Context caching | Yes — 90% off cached tokens | Yes — 99% off cached tokens |
| Batch API discount | 50% off | Not available |
| Context window | 1M tokens | 1M tokens |
| Tokenizer | Anthropic tokenizer (Opus 4.7+) | SentencePiece (Llama) |
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
Claude Fable 5
$15.0000
Input: $5.0000 +Output: $10.0000
DeepSeek V4 Pro
$0.3915
Input: $0.2175 +Output: $0.1740
DeepSeek V4 Pro is 97% cheaper for this workload — saving $14.6085 per month at this volume.
Frequently asked questions
No, DeepSeek V4 Pro is cheaper for the typical workload above. At $0.435/1M input and $0.870/1M output tokens, it costs $0.3915 versus $15.0000 for Claude Fable 5 — a 97% difference.
Claude Fable 5 supports a 1M token context window. DeepSeek V4 Pro supports a 1M token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
Claude Fable 5 supports context caching (90% off repeated tokens). It offers a 50% Batch API discount. DeepSeek V4 Pro supports context caching (99% off repeated tokens). It does not offer a batch API discount.
No, they use different tokenizers. Claude Fable 5 uses the Anthropic tokenizer (Opus 4.7+), while DeepSeek V4 Pro uses SentencePiece (Llama). Different tokenizers split text differently, so the same prompt will produce different token counts on each model — the effective cost difference may be larger or smaller than the per-token price difference alone suggests.
Claude Fable 5 (Anthropic): $10 input / $50 output per 1M tokens. DeepSeek V4 Pro (DeepSeek): $0.435 input / $0.87 output per 1M tokens. Rates shown before caching or batch discounts.
For an 80% output / 20% input workload — typical for code generation or long-form writing — Claude Fable 5 costs $42.0000 per 1M total tokens and DeepSeek V4 Pro costs $0.7830. DeepSeek V4 Pro is 98% cheaper for this pattern. For your exact ratio, paste a real prompt into the calculator above.
Claude Fable 5 has a 1M-token context window — approximately 750K words or ~3K pages of standard text. DeepSeek V4 Pro has a 1M-token context window — approximately 750K words or ~3K pages. (Estimates assume ~0.75 words per token.)
Calculate costs for your actual prompt
Paste your prompt into the calculator and get exact token counts using each model's real tokenizer — all in your browser.
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