API cost decision in 10 seconds

🔥Claude Opus 5 vs Inkling

Pick Inkling when budget and context both matter.

Page updated: 2026-08-23T01:07:54Z Data confirmed: 2026-08-23T12:07:48Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Inkling when budget and context both matter.

On the standard 1M input plus 500K output workload, Inkling is estimated at $3.02 vs $17.5 for Claude Opus 5, saving $14.47 (82.7% lower).

Cost-first pickInkling

Context-first pickInkling

Sample savings$14.4782.7%

10x traffic gap$144.75

Inkling is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $144.75. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Inkling stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Claude Opus 5	Inkling
Input-heavy / RAG	5M input + 500K output	Inkling	$37.5	$7.03
Balanced workload	1M input + 1M output	Inkling	$30	$5.05
Output-heavy chatbot	1M input + 5M output	Inkling	$130	$21.25

Cheaper input Inkling $5 vs $1 / 1M

Inkling is $4 cheaper per 1M input tokens (80% lower; 5x difference).

Cheaper output Inkling $25 vs $4.05 / 1M

Inkling is $20.95 cheaper per 1M output tokens (83.8% lower; 6.17x difference).

Larger context Inkling 1M vs 1.05M

Inkling has 48.58K more context (1.05x larger).

Sample workload Inkling $17.5 vs $3.02

Inkling is $14.47 cheaper on the standard workload (82.7% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Claude Opus 5 Calculating… Estimated API cost

Inkling Calculating… Estimated API cost

Cheaper for this workload Calculating… Difference: calculating…

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

Verdict

Inkling has the lower input price; Inkling has the lower output price; Inkling offers the larger context window. For the 1M input plus 500K output sample, Inkling is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $17.5 for Claude Opus 5 and $3.02 for Inkling.

Best Fit

Choose Claude Opus 5 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Inkling when you care most about lower input-token price, lower output-token price, and larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Inkling is estimated at $3.02 vs $17.5 for Claude Opus 5, saving $14.47 (82.7% lower).
Inkling is $14.47 cheaper on the standard workload (82.7% lower).
Inkling is $4 cheaper per 1M input tokens (80% lower; 5x difference).
Inkling is $20.95 cheaper per 1M output tokens (83.8% lower; 6.17x difference).
Inkling has 48.58K more context (1.05x larger).

Head-to-Head Specs

Feature	🔥Claude Opus 5 (Anthropic)	Inkling (Thinking Machines)
Input Price prompt tokens per 1M	$5	$1
Completion Price per 1M tokens	$25	$4.05
Sample Workload Cost 1M input + 500K output	$17.5	$3.02
Context Window	1M	1.05M
Release Date	2026-07-24	2026-07-17
Popularity	#9

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Inkling	On the standard 1M input plus 500K output workload, Inkling is estimated at $3.02 vs $17.5 for Claude Opus 5, saving $14.47 (82.7% lower).
High-volume input processing	Inkling	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Inkling	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Inkling	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Claude 3 Haiku can replace Claude Opus 5 when lower sample workload cost matters most: $0.88.
Claude Haiku 4.5 (batch) can replace Claude Opus 5 when lower sample workload cost matters most: $1.75.
Claude 3.5 Haiku can replace Claude Opus 5 when lower sample workload cost matters most: $2.8.
Claude Sonnet 5 (batch) can replace Claude Opus 5 when lower sample workload cost matters most: $3.5.

Larger context near this budget

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.

Popular competitors

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.

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Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

Anthropic catalog

Review all tracked Anthropic models before deciding whether this matchup is the right shortlist.

Open Anthropic models

Thinking Machines catalog

Check other Thinking Machines models with comparable pricing, context, or release timing.

Open Thinking Machines models

Claude Opus 5

Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...

Inkling

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,...