Claude Fable 5 (batch) is $5 cheaper per 1M input tokens (50% lower; 2x difference).
API cost decision in 10 seconds
Claude Fable Latest vs Claude Fable 5 (batch)
Pick Claude Fable 5 (batch) when budget is the priority.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Claude Fable 5 (batch) when budget is the priority.
On the standard 1M input plus 500K output workload, Claude Fable 5 (batch) is estimated at $17.5 vs $35 for Claude Fable Latest, saving $17.5 (50% lower).
Cost-first pickClaude Fable 5 (batch)
Context-first pickBoth models
Sample savings$17.550%
10x traffic gap$175
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $175. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Claude Fable 5 (batch) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Claude Fable Latest | Claude Fable 5 (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Claude Fable 5 (batch) | $75 | $37.5 |
| Balanced workload | 1M input + 1M output | Claude Fable 5 (batch) | $60 | $30 |
| Output-heavy chatbot | 1M input + 5M output | Claude Fable 5 (batch) | $260 | $130 |
Claude Fable 5 (batch) is $25 cheaper per 1M output tokens (50% lower; 2x difference).
Both models report the same context window at 1M tokens.
Claude Fable 5 (batch) is $17.5 cheaper on the standard workload (50% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Claude Fable 5 (batch) has the lower input price; Claude Fable 5 (batch) has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Claude Fable 5 (batch) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $35 for Claude Fable Latest and $17.5 for Claude Fable 5 (batch).
Choose Claude Fable Latest when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose Claude Fable 5 (batch) when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Claude Fable 5 (batch) is estimated at $17.5 vs $35 for Claude Fable Latest, saving $17.5 (50% lower).
- Claude Fable 5 (batch) is $17.5 cheaper on the standard workload (50% lower).
- Claude Fable 5 (batch) is $5 cheaper per 1M input tokens (50% lower; 2x difference).
- Claude Fable 5 (batch) is $25 cheaper per 1M output tokens (50% lower; 2x difference).
- Both models report the same context window at 1M tokens.
| Feature | Claude Fable Latest (Anthropic) | Claude Fable 5 (batch) (Anthropic) |
|---|---|---|
| Input Price prompt tokens per 1M | $10 | $5 |
| Completion Price per 1M tokens | $50 | $25 |
| Sample Workload Cost 1M input + 500K output | $35 | $17.5 |
| Context Window | 1M | 1M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Claude Fable 5 (batch) | On the standard 1M input plus 500K output workload, Claude Fable 5 (batch) is estimated at $17.5 vs $35 for Claude Fable Latest, saving $17.5 (50% lower). |
| High-volume input processing | Claude Fable 5 (batch) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Claude Fable 5 (batch) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Claude 3 Haiku can replace Claude Fable Latest when lower sample workload cost matters most: $0.88.
- Claude Haiku 4.5 (batch) can replace Claude Fable Latest when lower sample workload cost matters most: $1.75.
- Claude 3.5 Haiku can replace Claude Fable Latest when lower sample workload cost matters most: $2.8.
- Claude Sonnet 5 (batch) can replace Claude Fable Latest when lower sample workload cost matters most: $3.5.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsAnthropic catalog
Review all tracked Anthropic models before deciding whether this matchup is the right shortlist.
Open Anthropic modelsThis model always redirects to the latest model in the Claude Fable family.
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning support and...