Gemini 3.1 Flash Lite Preview vs GPT-6.1 Terra Pro

Price, context window & benchmark comparison

Gemini 3.1 Flash Lite Preview

Google

$0.25 / $1.50

Input / Output · per 1M tokens

GPT-6.1 Terra Pro

OpenAI

$1.00 / $5.00

Input / Output · per 1M tokens

Compare different models

Verdict: Gemini 3.1 Flash Lite Preview is 3.6× 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 1M).

	Gemini 3.1 Flash Lite Preview	GPT-6.1 Terra Pro
Input price / 1M	$0.25	$1.00
Output price / 1M	$1.50	$5.00
Blended price (3:1)	$0.56	$2.00
Cached input / 1M	$0.025	$0.05
Context window	1M	1.1M
Max output	66K	128K
Intelligence index	6.2	—
Coding index	34.7	—
Providers	—	6
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-03-03	2026-10-26
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Gemini 3.1 Flash Lite Preview or GPT-6.1 Terra Pro?

Gemini 3.1 Flash Lite Preview is 3.6× cheaper than GPT-6.1 Terra Pro on a typical 3:1 input/output mix.

Gemini 3.1 Flash Lite Preview vs GPT-6.1 Terra Pro: which has a bigger context window?

Gemini 3.1 Flash Lite Preview: 1,048,576 tokens. GPT-6.1 Terra Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 3.1 Flash Lite Preview ≈ $1,250, GPT-6.1 Terra Pro ≈ $4,500.

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