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Claude Fable 5 API Pricing & Cost Calculator

Claude Fable 5 sits above Opus 4.8 as Anthropic's most capable model. $10/$50 per 1M tokens, 1M context, 128K output, 90% cache discount. For the hardest reasoning and agentic workloads where quality dominates cost.

Anthropic plans to retire Claude Fable 5 on 2027-06-09

Pricing below is still current. Worth factoring the retirement date into anything you are building on it long-term.

Still available from Anthropic: Claude Mythos 5, Claude Opus 5, Claude Opus 4.8

Input
$10.00
per 1M tokens
Output
$50.00
per 1M tokens
Context window
1000K
tokens
Released
2026-06
Cutoff —
≈ Estimated tokenizer·$10.00 in·$50.00 out (per 1M)
Quick start with a use case
Total cost per call$0.0350
Input$0.0100
Output$0.0250
Cost comparison
Standard
$0.0350
With Caching
$0.0305
Save 13% ↓
With Batch
$0.0175
Save 50% ↓
Cutting costs? Open models start at $0.28/1M

DeepSeek, Kimi & 200+ open models on Novita AI — often 5–20x cheaper than proprietary APIs for comparable tasks.

Try Novita AI

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Detailed pricing

Claude Fable 5 pricing breakdown

All pricing dimensions including caching and batch discounts.

TypePrice (per 1M tokens)
Input$10.0000
Output$50.0000
Cached input$1.0000
Cache write$12.5000
Batch input$5.0000
Batch output$25.0000
Cutting costs? Open models start at $0.28/1M

DeepSeek, Kimi & 200+ open models on Novita AI — often 5–20x cheaper than proprietary APIs for comparable tasks.

Try Novita AI

Affiliate link — we may earn a commission at no extra cost to you.

Last verified 2026-08-01 · Anthropic official pricing · ⚠️ Spotted a wrong price? Report in 30s →

How it compares

Claude Fable 5 vs alternatives

Single-call cost (1000 input + 500 output tokens) ranked from cheapest.

ModelPer call
Claude Fable 5
Anthropic · this page
$0.0350
DeepSeek V3.2
DeepSeek
$0.000480
GPT-5.6 Luna
OpenAI
$0.000800
Gemini 3.1 Flash Lite
Google
$0.001000
DeepSeek V4-Flash
DeepSeek
$0.001100
GPT-5 mini
OpenAI
$0.001250
Recommended use

When to choose Claude Fable 5

Claude Fable 5 shines for complex multi-step reasoning, code generation and review, general-purpose tasks, and long documents and large codebases. Token counts are estimated within ~10-20% margin.

✓Context window of 1000K tokens handles entire codebases or book-length documents.
✓Prompt caching available — significant savings for repeated system prompts.
✓Batch API support for non-realtime workloads at ~50% discount.
✓Tool / function calling supported.
FAQ

Frequently asked questions

Claude Fable 5 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens. A typical chat call (1000 input + 500 output tokens) costs approximately $0.0350. Use the calculator above to estimate your specific use case.
Claude Fable 5 supports a 1000K token context window with a max output of 128,000 tokens.
Yes. Cached input is priced at $1.00 per 1M tokens — 90% cheaper than uncached input. This is especially valuable for repeated system prompts, long-context retrieval, and chat threads with shared history.
Yes. Claude Fable 5 supports the Batch API at $5.00 input / $25.00 output per 1M tokens — typically 50% off standard pricing. Batch jobs complete within ~24 hours, ideal for non-realtime workloads like overnight data processing or content generation pipelines.
Yes, Claude Fable 5 accepts image input. Vision token pricing is generally calculated based on image dimensions and folded into the input token count. Specific image-specific pricing varies — refer to Anthropic's official documentation.
Token counts for Claude Fable 5 are estimated from character ratios (~10-20% margin). Cost calculations use prices verified on 2026-08-01. For final billing accuracy, always verify with Anthropic's usage dashboard.
Claude Fable 5 does not currently support fine-tuning. Consider another model in the Anthropic family if fine-tuning is required.
Related

Other models you might consider

DeepSeek
DeepSeek V3.2
DeepSeek's open-weight MoE — top cost/quality ratio
$0.28 in$0.40 out
OpenAI
GPT-5.6 Luna
The cheapest long-context model OpenAI ships — 20x under the flagship
$0.20 in$1.20 out
Google
Gemini 3.1 Flash Lite
Google's cheapest listed model — 250¢/1M input
$0.25 in$1.50 out
DeepSeek
DeepSeek V4-Flash
1M context at budget pricing — $0.44/$1.32
$0.44 in$1.32 out
OpenAI
GPT-5 mini
OpenAI's affordable small model with 272K context
$0.25 in$2.00 out