Which is cheaper, Inkling Small and Grok 4.7?

Inkling Small has the lowest input price. Per 1M input tokens: Inkling Small from $0.45 and Grok 4.7 from $2.00.

Which has the larger context window, Inkling Small and Grok 4.7?

Inkling Small has the largest context window: Inkling Small 524,288 tokens and Grok 4.7 500,000 tokens.

Can I switch between Inkling Small and Grok 4.7 without changing my code?

Yes. All of them are served through FastRouter's OpenAI-compatible API, so switching is a change of the model parameter (thinkingmachines/inkling-small, x-ai/grok-4.7).

Inkling Small vs Grok 4.7

Side-by-side pricing per provider, context window, benchmark scores and speed, all on one OpenAI-compatible API.

Estimate monthly cost for these models

Inkling Small Thinking Machinesthinkingmachines/inkling-small

Grok 4.7 xAIx-ai/grok-4.7

Creator

Thinking Machines

xAI

Released

Jul 30, 2026

Sep 21, 2026

Context window

524K

500K

Max output

262K

500K

Input / 1MLowest provider price

$0.45

$2.00

Output / 1MLowest provider price

$1.20

$6.00

Providers

IntelligenceArtificial Analysis index

12.9

35.2

Accepts

Text, Image, Audio

Text, Image

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

Inkling Small vs Grok 4.7: summary

Inkling Small and Grok 4.7 are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

Inkling Small, from Thinking Machines, has a 524,288-token context window, costs $0.45/1M input and $1.20/1M output tokens and scores 12.9 on the Artificial Analysis Intelligence Index.

Grok 4.7, from xAI, has a 500,000-token context window, costs $2.00/1M input and $6.00/1M output tokens and scores 35.2 on the Artificial Analysis Intelligence Index.

Inkling Small is the cheapest on input, 4.4× cheaper than the next model, Inkling Small has the largest context window and Grok 4.7 scores highest for intelligence.

Switch with one line

client = OpenAI(base_url="https://api.fastrouter.ai/api/v1", api_key="<FASTROUTER_API_KEY>") client.chat.completions.create(model="thinkingmachines/inkling-small", messages=[...]) # or client.chat.completions.create(model="x-ai/grok-4.7", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis