Models

Gemini 2.5 Flash Preview 09 2025 vs GLM 5.2

Compare Gemini 2.5 Flash Preview 09 2025 from Google and GLM 5.2 from Z.AI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

GoogleGemini 2.5 Flash Preview 09 2025Z.AIGLM 5.2
Google logo
Gemini 2.5 Flash Preview 09 2025
Google · text, image, audio, video → text

This latest 2.5 Flash model comes with improvements in two key areas we heard consistent feedback on: Better agentic tool use: We've improved how the model uses tools, leading to better performance in more complex, agentic and multi-step applications. This model shows noticeable improvements on key agentic benchmarks, including a 5% gain on SWE-Bench Verified, compared to our last release (48.9% → 54%). More efficient: With thinking on, the model is now significantly more cost-efficient—achieving higher quality outputs while using fewer tokens, reducing latency and cost (see charts above).

Input$0.30 /M
Output$2.50 /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 2.5 Flash Preview 09 2025
GLM 5.2
Input /M
$0.30
$1.13
Output /M
$2.50
$3.94
Cache read /M
$0.03
$0.28
Context length
1,048,576
1,000,000
Max output
65,536
128,000
Time to First Token
0.4 s
1.1 s
Throughput
144.3 tok/s
33.8 tok/s
Modalities
textimageaudiovideo
text
Supported Parameters
toolsfunction callingstructured outputs
thinkingtoolsfunction callingstructured outputs
API Formats
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-2.5-flash-preview-09-2025glm-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-2.5-flash-preview-09-2025glm-5.2

Throughput (tok/s)

-

TTFT (s)

-

Uptime (%)

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LMArena Benchmarks

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

Text
gemini-2.5-flash-preview-09-2025glm-5.2
1360142014801540
Overall
14041470
Coding
14281505
Math
14121475
Hard prompts
14201488
Instruction following
14021462
Multi-turn
14001470
Creative writing
13831450
Longer query
14171479
Chinese
14481516
English
14111477

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 2.5 Flash Preview 09 2025
$55.49 /mo
GLM 5.2
$127 /mo

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

FAQ

Which is cheaper: Gemini 2.5 Flash Preview 09 2025, GLM 5.2?

Gemini 2.5 Flash Preview 09 2025: $2.50/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 2.5 Flash Preview 09 2025: 1428 (LMArena coding leaderboard).

Which responds faster?

Gemini 2.5 Flash Preview 09 2025: 0.4s 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 2.5 Flash Preview 09 2025 accepts 1,048,576 and GLM 5.2 accepts 1,000,000 input tokens. Maximum output per request is 65,536 tokens on Gemini 2.5 Flash Preview 09 2025 and 128,000 tokens on GLM 5.2.

Which one generates tokens faster?

Gemini 2.5 Flash Preview 09 2025 at 144.3 tok/s and GLM 5.2 at 33.8 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 2.5 Flash Preview 09 2025 accepts text, image, audio and video input and supports tool calling, function calling and structured outputs; GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs.

Can I call Gemini 2.5 Flash Preview 09 2025 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.

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