Grok Latest is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).
API cost decision in 10 seconds
Grok Latest vs Claude Fable 5 (batch)
Pick Grok Latest for lower cost; pick Claude Fable 5 (batch) only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Grok Latest for lower cost; pick Claude Fable 5 (batch) only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Grok Latest is estimated at $5 vs $17.5 for Claude Fable 5 (batch), saving $12.5 (71.4% lower).
Cost-first pickGrok Latest
Context-first pickClaude Fable 5 (batch)
Sample savings$12.571.4%
10x traffic gap$125
Claude Fable 5 (batch) has more context, but Grok Latest saves $12.5 on the standard workload. At 10x that traffic, the same price gap is about $125. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Grok Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Grok Latest | Claude Fable 5 (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Grok Latest | $13 | $37.5 |
| Balanced workload | 1M input + 1M output | Grok Latest | $8 | $30 |
| Output-heavy chatbot | 1M input + 5M output | Grok Latest | $32 | $130 |
Grok Latest is $19 cheaper per 1M output tokens (76% lower; 4.17x difference).
Claude Fable 5 (batch) has 500K more context (2x larger).
Grok Latest is $12.5 cheaper on the standard workload (71.4% 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
Grok Latest has the lower input price; Grok Latest has the lower output price; Claude Fable 5 (batch) offers the larger context window. For the 1M input plus 500K output sample, Grok Latest is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $5 for Grok Latest and $17.5 for Claude Fable 5 (batch).
Choose Grok Latest when you care most about lower input-token price, and lower output-token price.
Choose Claude Fable 5 (batch) when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Grok Latest is estimated at $5 vs $17.5 for Claude Fable 5 (batch), saving $12.5 (71.4% lower).
- Grok Latest is $12.5 cheaper on the standard workload (71.4% lower).
- Grok Latest is $3 cheaper per 1M input tokens (60% lower; 2.5x difference).
- Grok Latest is $19 cheaper per 1M output tokens (76% lower; 4.17x difference).
- Claude Fable 5 (batch) has 500K more context (2x larger).
| Feature | Grok Latest (xAI) | Claude Fable 5 (batch) (Anthropic) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $5 |
| Completion Price per 1M tokens | $6 | $25 |
| Sample Workload Cost 1M input + 500K output | $5 | $17.5 |
| Context Window | 500K | 1M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Grok Latest | On the standard 1M input plus 500K output workload, Grok Latest is estimated at $5 vs $17.5 for Claude Fable 5 (batch), saving $12.5 (71.4% lower). |
| High-volume input processing | Grok Latest | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Grok Latest | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Claude Fable 5 (batch) | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Claude 3 Haiku can replace Claude Fable 5 (batch) when lower sample workload cost matters most: $0.88.
- Claude Haiku 4.5 (batch) can replace Claude Fable 5 (batch) when lower sample workload cost matters most: $1.75.
- Claude 3.5 Haiku can replace Claude Fable 5 (batch) when lower sample workload cost matters most: $2.8.
- Claude Sonnet 5 (batch) can replace Claude Fable 5 (batch) 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.
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- MiMo-V2.5 · Xiaomi · #2
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Cheaper alternatives
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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...