Inkling (batch) is $1 cheaper per 1M input tokens (50% lower; 2x difference).
API cost decision in 10 seconds
🔥Claude Sonnet 5 vs Inkling (batch)
Pick Inkling (batch) for lower cost; pick Claude Sonnet 5 only if the larger context window matters more.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Inkling (batch) for lower cost; pick Claude Sonnet 5 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Inkling (batch) is estimated at $3.02 vs $7 for Claude Sonnet 5, saving $3.98 (56.8% lower).
Cost-first pickInkling (batch)
Context-first pickClaude Sonnet 5
Sample savings$3.9856.8%
10x traffic gap$39.75
Claude Sonnet 5 has more context, but Inkling (batch) saves $3.98 on the standard workload. At 10x that traffic, the same price gap is about $39.75. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Inkling (batch) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Claude Sonnet 5 | Inkling (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Inkling (batch) | $15 | $7.03 |
| Balanced workload | 1M input + 1M output | Inkling (batch) | $12 | $5.05 |
| Output-heavy chatbot | 1M input + 5M output | Inkling (batch) | $52 | $21.25 |
Inkling (batch) is $5.95 cheaper per 1M output tokens (59.5% lower; 2.47x difference).
Claude Sonnet 5 has 475.71K more context (1.91x larger).
Inkling (batch) is $3.98 cheaper on the standard workload (56.8% 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
Inkling (batch) has the lower input price; Inkling (batch) has the lower output price; Claude Sonnet 5 offers the larger context window. For the 1M input plus 500K output sample, Inkling (batch) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $7 for Claude Sonnet 5 and $3.02 for Inkling (batch).
Choose Claude Sonnet 5 when you care most about larger context window.
Choose Inkling (batch) when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Inkling (batch) is estimated at $3.02 vs $7 for Claude Sonnet 5, saving $3.98 (56.8% lower).
- Inkling (batch) is $3.98 cheaper on the standard workload (56.8% lower).
- Inkling (batch) is $1 cheaper per 1M input tokens (50% lower; 2x difference).
- Inkling (batch) is $5.95 cheaper per 1M output tokens (59.5% lower; 2.47x difference).
- Claude Sonnet 5 has 475.71K more context (1.91x larger).
| Feature | 🔥Claude Sonnet 5 (Anthropic) | Inkling (batch) (Thinking Machines) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $1 |
| Completion Price per 1M tokens | $10 | $4.05 |
| Sample Workload Cost 1M input + 500K output | $7 | $3.02 |
| Context Window | 1M | 524.29K |
| Release Date | ||
| Popularity | #16 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Inkling (batch) | On the standard 1M input plus 500K output workload, Inkling (batch) is estimated at $3.02 vs $7 for Claude Sonnet 5, saving $3.98 (56.8% lower). |
| High-volume input processing | Inkling (batch) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Inkling (batch) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Claude Sonnet 5 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Claude 3 Haiku can replace Claude Sonnet 5 when lower sample workload cost matters most: $0.88.
- Claude Haiku 4.5 (batch) can replace Claude Sonnet 5 when lower sample workload cost matters most: $1.75.
- Claude 3.5 Haiku can replace Claude Sonnet 5 when lower sample workload cost matters most: $2.8.
- Claude Sonnet 5 (batch) can replace Claude Sonnet 5 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 modelsThinking Machines catalog
Check other Thinking Machines models with comparable pricing, context, or release timing.
Open Thinking Machines modelsSonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total. It is designed for general-purpose reasoning, coding, agentic and tool-use systems,...