GPT-6.1 Sol Pro vs Inkling Small

Price, context window & benchmark comparison

OpenAI

GPT-6.1 Sol Pro

OpenAI
$2.00 / $10.00
Input / Output · per 1M tokens
VS
Thinkingmachines

Inkling Small

Thinkingmachines
$0.45 / $1.20
Input / Output · per 1M tokens
Compare different models
OpenAI
Thinkingmachines
Verdict: Inkling Small is 6.3× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix. GPT-6.1 Sol Pro has the larger context window (1.1M vs 524K).
GPT-6.1 Sol ProInkling Small
Input price / 1M$2.00$0.45
Output price / 1M$10.00$1.20
Blended price (3:1)$4.00$0.64
Cached input / 1M$0.10$0.10
Context window1.1M524K
Max output128K262K
Intelligence index—12.9
Coding index—52.9
Providers7—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-292026-07-30
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6.1 Sol Pro or Inkling Small?

Inkling Small is 6.3× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix.

GPT-6.1 Sol Pro vs Inkling Small: which has a bigger context window?

GPT-6.1 Sol Pro: 1,050,000 tokens. Inkling Small: 524,288 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6.1 Sol Pro ≈ $9,000, Inkling Small ≈ $1,500.

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