Compare AI models

Specifications
Parameters
—125B
Context window
—262k
API pricing
Input price
$2.00—
Output price
$12.00—
Cached input price
$0.20—
Cheapest input
$1.00Google—
Cheapest output
$6.00Google—
Benchmarks
SWE-Bench Pro
54.2%62.5%
DeepSWE 1.1
12%58.7%
Humanity's Last Exam · no tools
44.4%35.9%
Humanity's Last Exam · with tools
51.4%35.9%
GPQA Diamond
94.3%91.7%
CharXiv Reasoning
83.3%84.6%
Overview
CompanyGoogleQwen
Release dateFeb 19 2026Aug 26 2026
AccessClosedOpen Weight
Model detailsView modelView model

Frequently asked questions

Gemini 3.1 Pro and Qwen3.8-Flash-Next are evenly matched across the 6 benchmarks they both report. Only Gemini 3.1 Pro has a verified first-party API price: $2.00 per million input tokens and $12.00 per million output tokens. No pay-as-you-go API rate is tracked for Qwen3.8-Flash-Next. Gemini 3.1 Pro shipped 188 days before Qwen3.8-Flash-Next, so benchmark comparisons should account for the intervening progress.

Gemini 3.1 Pro is closed, while Qwen3.8-Flash-Next is open weight.

On SWE-Bench Pro, Qwen3.8-Flash-Next leads at 62.5% vs Gemini 3.1 Pro at 54.2%. On DeepSWE 1.1, Qwen3.8-Flash-Next leads at 58.7% vs Gemini 3.1 Pro at 12%. On Humanity's Last Exam · no tools, Gemini 3.1 Pro leads at 44.4% vs Qwen3.8-Flash-Next at 35.9%. On Humanity's Last Exam · with tools, Gemini 3.1 Pro leads at 51.4% vs Qwen3.8-Flash-Next at 35.9%. On GPQA Diamond, Gemini 3.1 Pro leads at 94.3% vs Qwen3.8-Flash-Next at 91.7%. On CharXiv Reasoning, Qwen3.8-Flash-Next leads at 84.6% vs Gemini 3.1 Pro at 83.3%.