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GPTvsGemini

GPT 5.6 Terra vs Gemini 3.1 Flash-Lite

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

GPT 5.6 Terra

Mid-tier

Gemini 3.1 Flash-Lite

Fast / Budget
Input $/MTok
$2.00
$0.25
Output $/MTok
$12.00
$1.50
Cache discount
90% off
90% off
Context
922K
1,048.576K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
86
vs
0
Code Review
84
vs
0
Summarization
92
vs
0
Q&A
92
vs
0
Extraction
90
vs
0
Reasoning
82
vs
0
Classification
89
vs
0
Creative Writing
80
vs
0
GPT 5.6 Terra
Gemini 3.1 Flash-Lite

Guidance

When to use GPT 5.6 Terra vs Gemini 3.1 Flash-Lite

Choose GPT 5.6 Terra when...

  • Similar performance; consider provider preference or ecosystem fit.

Choose Gemini 3.1 Flash-Lite when...

  • -Cost matters: 88% cheaper on input tokens
  • -You need a larger context window (1,048.576K vs 922K)

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 5.6 Terra
Gemini 3.1 Flash-Lite
100K tokens
$0.50
$0.06Cheaper
1M tokens
$8.20
$0.63Cheaper
10M tokens
$82.00
$6.25Cheaper

FAQ

When should I use GPT 5.6 Terra instead of Gemini 3.1 Flash-Lite?

GPT 5.6 Terra and Gemini 3.1 Flash-Lite perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is Gemini 3.1 Flash-Lite cheaper than GPT 5.6 Terra?

Yes. Gemini 3.1 Flash-Lite input costs $0.25/MTok vs $2.00/MTok for GPT 5.6 Terra, saving 88% on input.

What are the context window sizes for GPT 5.6 Terra and Gemini 3.1 Flash-Lite?

GPT 5.6 Terra has a 922K token context window. Gemini 3.1 Flash-Lite has a 1,048.576K token context window.

Go deeper on either model

Per-call cost calculators, provider lineups, and price history for both models on this page.

GPT 5.6 Terra pricing & benchmarks

$2.00 / $12.00 per MTok

GPT 5.6 Terra cost calculator

All GPT models

GPT 5.6 Terra pricing history

Gemini 3.1 Flash-Lite pricing & benchmarks

$0.25 / $1.50 per MTok

Gemini 3.1 Flash-Lite cost calculator

All Gemini models

Gemini 3.1 Flash-Lite pricing history

Other comparisons

How GPT 5.6 Terra and Gemini 3.1 Flash-Lite stack up against the rest of the field.

GPT 5.6 Terra vs Claude Opus 4.8

GPT 5.6 Terra vs Claude Sonnet 4.6

GPT 5.6 Terra vs Claude Haiku 4.5

Gemini 3.1 Flash-Lite vs Claude Opus 4.8

Gemini 3.1 Flash-Lite vs Claude Sonnet 4.6

Gemini 3.1 Flash-Lite vs Claude Haiku 4.5

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.

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