Gemma 4 31B vs GPT-6.1 Sol Pro

Price, context window & benchmark comparison

Google

Gemma 4 31B

Google
$0.20 / $0.40
Input / Output · per 1M tokens
VS
OpenAI

GPT-6.1 Sol Pro

OpenAI
$2.00 / $10.00
Input / Output · per 1M tokens
Compare different models
Google
OpenAI
Verdict: Gemma 4 31B is 16.0× 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 262K).
Gemma 4 31BGPT-6.1 Sol Pro
Input price / 1M$0.20$2.00
Output price / 1M$0.40$10.00
Blended price (3:1)$0.25$4.00
Cached input / 1M—$0.10
Context window262K1.1M
Max output16K128K
Intelligence index4.4—
Coding index43.4—
Providers—7
Best provider uptime (30m)—100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-04-022026-09-29
Retirement——

Cost calculator

FAQ

Which is cheaper, Gemma 4 31B or GPT-6.1 Sol Pro?

Gemma 4 31B is 16.0× cheaper than GPT-6.1 Sol Pro on a typical 3:1 input/output mix.

Gemma 4 31B vs GPT-6.1 Sol Pro: which has a bigger context window?

Gemma 4 31B: 262,144 tokens. GPT-6.1 Sol Pro: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemma 4 31B ≈ $600.00, GPT-6.1 Sol Pro ≈ $9,000.

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