Data points: 55
The readout for GLM-4.5 Air and LFM 2.5 1.2B Instruct, before the detailed comparison sheet.
Decision read
GLM-4.5 Air
GLM-4.5 Air currently has the stronger profile, with verified wins split 2 to 1.
Evidence depth
55 data points
Includes 0 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with GLM-4.5 Air
The charts below split 9 high-signal samples across speed, scores, and audit health.
Model compare GLM-4.5 Air vs LFM 2.5 1.2B Instructglm-4-5-air-vs-lfm-2-5-1-2b-instruct | Model A GLM-4.5 Air | Model B LFM 2.5 1.2B Instruct |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 2 wins | 1 wins |
| Where it leads | Provider coverage, Recent tests | Cheapest input price |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GLM-4.5 Air | LFM 2.5 1.2B Instruct |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GLM-4.5 Air | LFM 2.5 1.2B Instruct |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GLM-4.5 Air | LFM 2.5 1.2B Instruct |
|---|---|---|
10 tests | GLM-4.5 Air speed / latency 20 tok/s / 33054ms input / output No data | LFM 2.5 1.2B Instruct |
This report only uses LMSpeed data for GLM-4.5 Air and LFM 2.5 1.2B Instruct: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GLM-4.5 Air | LFM 2.5 1.2B Instruct |
|---|---|---|
| When to choose each model | GLM-4.5 Air GLM-4.5 Air is stronger when you prioritize Provider coverage, Recent tests. | LFM 2.5 1.2B Instruct LFM 2.5 1.2B Instruct is stronger when you prioritize Cheapest input price. |
TL;DR: GLM-4.5 Air leads across 55 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GLM-4.5 Air vs LFM 2.5 1.2B Instruct into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GLM-4.5 Air exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | Zhipu AI | No data |
| Context window | 131.1K tokens | No data |
| Max output | 131.1K tokens | No data |
| Released | Jul 2025 | No data |
| Modalities | Input Text Output Text | No data |
| Features | Text inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
| Parameters | No data | No data |
| Tokenizer | Other | No data |
| Knowledge cutoff | 2024-12-31 | No data |
| OpenRouter ID | z-ai/glm-4.5-air | No data |
| References | No data | No data |
speed / latency
N/A / N/A
input / output
No data
素墨API10 tests | GLM-4.5 Air speed / latency 27 tok/s / 39365ms input / output No data | LFM 2.5 1.2B Instruct speed / latency N/A / N/A input / output No data |
|---|
91VIP0 tests | GLM-4.5 Air glm-4.5-air speed / latency N/A / N/A input / output $0.260/M / $0.221/M | LFM 2.5 1.2B Instruct lfm-2.5-1.2b-instruct speed / latency N/A / N/A input / output $0.0010/M / $0.0010/M |
|---|
AI API0 tests | GLM-4.5 Air speed / latency N/A / N/A input / output No data | LFM 2.5 1.2B Instruct speed / latency N/A / N/A input / output No data |
|---|
APDSM0 tests | GLM-4.5 Air speed / latency N/A / N/A input / output No data | LFM 2.5 1.2B Instruct speed / latency N/A / N/A input / output No data |
|---|
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0/M / $0/M | LFM 2.5 1.2B Instruct lfm-2.5-1.2b-instruct speed / latency No data input / output $0/M / $0/M |
GLM-4.5 Air z-ai/glm-4.5-air:free speed / latency No data input / output $0/M / $0/M | LFM 2.5 1.2B Instruct liquid/lfm-2.5-1.2b-instruct:free speed / latency No data input / output $0/M / $0/M |
GLM-4.5 Air glm-4.5-air speed / latency No data input / output $0.260/M / $0.221/M | LFM 2.5 1.2B Instruct lfm-2.5-1.2b-instruct speed / latency No data input / output $0.0010/M / $0.0010/M |
GLM-4.5 Air z-ai/glm-4.5-air:free speed / latency No data input / output $0.0050/M / $0.0050/M | LFM 2.5 1.2B Instruct liquid/lfm-2.5-1.2b-instruct:free speed / latency No data input / output $0.0050/M / $0.0050/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
