Gemini Omni 1.2 Flash vs GPT-5.6 Terra

Price, context window & benchmark comparison

Google

Gemini Omni 1.2 Flash

Google
$1.50 / $9.00
Input / Output · per 1M tokens
VS
OpenAI

GPT-5.6 Terra

OpenAI
$2.00 / $12.00
Input / Output · per 1M tokens
Compare different models
Google
OpenAI
Verdict: Gemini Omni 1.2 Flash is 25% cheaper than GPT-5.6 Terra on a typical 3:1 input/output mix. GPT-5.6 Terra has the larger context window (1.1M vs 131K).
Gemini Omni 1.2 FlashGPT-5.6 Terra
Input price / 1M$1.50$2.00
Output price / 1M$9.00$12.00
Blended price (3:1)$3.38$4.50
Cached input / 1M—$0.20
Context window131K1.1M
Max output66K128K
Intelligence index—32.3
Coding index—76.7
Providers1—
Best provider uptime (30m)100.0%—
Vision inputYesYes
ReasoningYesYes
Tool callingNoYes
Released2026-11-052026-07-09
Retirement——

Cost calculator

FAQ

Which is cheaper, Gemini Omni 1.2 Flash or GPT-5.6 Terra?

Gemini Omni 1.2 Flash is 25% cheaper than GPT-5.6 Terra on a typical 3:1 input/output mix.

Gemini Omni 1.2 Flash vs GPT-5.6 Terra: which has a bigger context window?

Gemini Omni 1.2 Flash: 131,072 tokens. GPT-5.6 Terra: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini Omni 1.2 Flash ≈ $7,500, GPT-5.6 Terra ≈ $10,000.

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