Gemini 2.5 Flash PreviewvsGLM 4.5 Air
Gemini 2.5 Flash Preview is cheaper than GLM 4.5 Air at $0.15/M vs $0.2/M input tokens.
| Spec | Gemini 2.5 Flash Preview | GLM 4.5 Air |
|---|---|---|
| Input price | $0.15/M tokens | $0.2/M tokens |
| Output price | $0.6/M tokens | $1.1/M tokens |
| Context window | 1.0M tokens | 128K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Jul 2025 |
Our Verdict
GLM 4.5 Air
Gemini 2.5 Flash PreviewRunner-up
Not enough votes to call it. On the specs, GLM 4.5 Air has the edge: bigger model tier, newer.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview
Input
$0.15
1.3× cheaper
Output
$0.60
1.8× cheaper
GLM 4.5 Air
Input
$0.20
Output
$1.10
Gemini 2.5 Flash Preview is cheaper on both: 1.3× input, 1.8× output.
Where to run it
3 hosts, cheapest first
Gemini 2.5 Flash Preview
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
68%
GLM 4.5 Air uses 31.7x more emoji
Gemini 2.5 Flash Preview
GLM 4.5 Air
51%Vocabulary50%
15wSentence Length18w
0.70Hedging0.40
4.1Bold5.1
3.3Lists4.3
0.00Emoji0.32
0.09Headings0.66
0.24Transitions0.09
Based on 12 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
GLM 4.5 Air vs Ox AlphaNew provider
GLM 4.5 Air vs MiniMax M3New provider
GLM 4.5 Air vs Claude Sonnet 4New provider
GLM 4.5 Air vs Grok 4New provider
GLM 4.5 Air vs Qwen3 235B A22BNew provider
GLM 4.5 Air vs Qwen3 235B A22B 2507New provider
GLM 4.5 Air vs Qwen3 235B A22B Thinking 2507New provider
GLM 4.5 Air vs Qwen3 30B A3BNew provider