GPT-6.1 Terra Pro vs Inkling

Price, context window & benchmark comparison

OpenAI

GPT-6.1 Terra Pro

OpenAI
$1.00 / $5.00
Input / Output · per 1M tokens
VS
Thinkingmachines

Inkling

Thinkingmachines
$1.00 / $4.05
Input / Output · per 1M tokens
Compare different models
OpenAI
Thinkingmachines
Verdict: Inkling is 12% cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix. GPT-6.1 Terra Pro has the larger context window (1.1M vs 524K).
GPT-6.1 Terra ProInkling
Input price / 1M$1.00$1.00
Output price / 1M$5.00$4.05
Blended price (3:1)$2.00$1.76
Cached input / 1M$0.05$0.17
Context window1.1M524K
Max output128K472K
Intelligence index—12.5
Coding index—52.1
Providers6—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-10-262026-07-17
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6.1 Terra Pro or Inkling?

Inkling is 12% cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix.

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

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

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6.1 Terra Pro ≈ $4,500, Inkling ≈ $4,025.

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