Which is cheaper, Ling 3.1 Flash and Inkling Small?

Ling 3.1 Flash has the lowest input price. Per 1M input tokens: Ling 3.1 Flash from $0.07 and Inkling Small from $0.45.

Which has the larger context window, Ling 3.1 Flash and Inkling Small?

Inkling Small has the largest context window: Ling 3.1 Flash 262,144 tokens and Inkling Small 524,288 tokens.

Can I switch between Ling 3.1 Flash and Inkling Small 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 (inclusionai/ling-3.1-flash, thinkingmachines/inkling-small).

Ling 3.1 Flash vs Inkling Small

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

Estimate monthly cost for these models

Ling 3.1 Flash inclusionAIinclusionai/ling-3.1-flash

Inkling Small Thinking Machinesthinkingmachines/inkling-small

Creator

inclusionAI

Thinking Machines

Released

Oct 2, 2026

Jul 30, 2026

Context window

262K

524K

Input / 1MLowest provider price

$0.07

$0.45

Output / 1MLowest provider price

$0.22

$1.20

Providers

IntelligenceArtificial Analysis index

29.6

12.9

Accepts

Text

Text, Image, Audio

Produces

Text

Tool calling

Yes

Structured output

Yes

Reasoning

Yes

Ling 3.1 Flash vs Inkling Small: summary

Ling 3.1 Flash and Inkling Small are both available through FastRouter's OpenAI-compatible API, so switching between them is a change of model id, not a new integration.

Ling 3.1 Flash, from inclusionAI, has a 262,144-token context window, costs $0.07/1M input and $0.22/1M output tokens and scores 29.6 on the Artificial Analysis Intelligence Index.

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.

Ling 3.1 Flash is the cheapest on input, 6.4× cheaper than the next model, Inkling Small has the largest context window and Ling 3.1 Flash 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="inclusionai/ling-3.1-flash", messages=[...]) # or client.chat.completions.create(model="thinkingmachines/inkling-small", messages=[...])

Full API docs

Frequently asked questions

More comparisons

Benchmark scores sourced from ArtificialAnalysis