Models

Gemini 3.1 Flash Lite vs GLM 5.2

Output tokens cost $1.50 per million on Gemini 3.1 Flash Lite and $3.94 per million on GLM 5.2. Input tokens cost $0.25 per million on Gemini 3.1 Flash Lite and $1.13 per million on GLM 5.2. Cached input tokens are billed at $0.25 per million on Gemini 3.1 Flash Lite and $0.28 per million on GLM 5.2. Context lengths are 1,000,000 tokens on Gemini 3.1 Flash Lite and 1,000,000 tokens on GLM 5.2. Time to first token (TTFT) measured on AIHubMix is 0.6s on Gemini 3.1 Flash Lite and 1.1s on GLM 5.2. Measured output throughput is 87.4 tok/s on Gemini 3.1 Flash Lite and 37.9 tok/s on GLM 5.2. On the LMArena coding leaderboard Gemini 3.1 Flash Lite scores 1457 and GLM 5.2 scores 1505.

GoogleGemini 3.1 Flash LiteZ.AIGLM 5.2
Google logo
Gemini 3.1 Flash Lite
Google · text, image, audio, video → text

gemini-3.1-flash-lite is currently Google's latest and most cost-effective model, optimized for large-scale agent-based tasks, translation, and simple data processing.

Input$0.25 /M
Output$1.50 /M
Z.AI logo
GLM 5.2
Z.AI · text → text

GLM-5.2 is Z.ai’s flagship model for the era of long-horizon tasks. With a truly usable 1M-token context window, it can handle project-level engineering context, execute long-running tasks more reliably, follow engineering standards more consistently, and complete the full development workflow from requirements to multi-platform deployment in a single task.

Input$1.13 /M
Output$3.94 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Gemini 3.1 Flash Lite
GLM 5.2
Input /M
$0.25
$1.13
Output /M
$1.50
$3.94
Cache read /M
$0.25
$0.28
Context length
1,000,000
1,000,000
Max output
64,000
128,000
Time to First Token
0.6 s
1.1 s
Throughput
87.4 tok/s
37.9 tok/s
Modalities
textimageaudiovideo
text
Supported Parameters
thinkingtoolsfunction callingstructured outputswebdeepsearchlong context
thinkingtoolsfunction callingstructured outputs
API Formats
chat_completions · gemini_api · claude_api
chat_completions · claude_api
Released
-
June 16, 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

gemini-3.1-flash-liteglm-5.2

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

gemini-3.1-flash-liteglm-5.2

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

-

LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
gemini-3.1-flash-liteglm-5.2
13801420146015001540
Overall
14321470
Coding
14571505
Math
14371475
Hard prompts
14441488
Instruction following
14071462
Multi-turn
14371470
Creative writing
14131450
Longer query
14281479
Chinese
14791516
English
14331477
WebDev Arena
gemini-3.1-flash-liteglm-5.2
1220134014601580
Overall
12541582
React
12421594
HTML
12821537
Gaming
12611617
Simulations
12591606
Data analytics
12371542

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Gemini 3.1 Flash Lite
$37.50 /mo
GLM 5.2
$127 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Gemini 3.1 Flash Lite, GLM 5.2?

Gemini 3.1 Flash Lite: $1.50/M output tokens; GLM 5.2: $3.94/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

GLM 5.2: 1505; Gemini 3.1 Flash Lite: 1457 (LMArena coding leaderboard).

Which responds faster?

Gemini 3.1 Flash Lite: 0.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Gemini 3.1 Flash Lite accepts 1,000,000 and GLM 5.2 accepts 1,000,000 input tokens. Maximum output per request is 64,000 tokens on Gemini 3.1 Flash Lite and 128,000 tokens on GLM 5.2.

Which one generates tokens faster?

Gemini 3.1 Flash Lite at 87.4 tok/s and GLM 5.2 at 37.9 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Gemini 3.1 Flash Lite accepts text, image, audio and video input and supports thinking, tool calling, function calling, structured outputs, web search, deep search and long context; GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs.

Can I call Gemini 3.1 Flash Lite and GLM 5.2 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

Popular comparisons

Related model match-ups readers also look at.