Terminus-2 – GLM-5.3 (low) vs. Codex – GPT-5.6 Luna (medium): geospatial agent comparison

Comparison between Terminus-2 – GLM-5.3 (low) and Codex – GPT-5.6 Luna (medium) on the Geospatial Agent Index, each benchmark, cost, time and token use, from the same tasks, agent and limits. Methodology.

Side by side

Terminus-2 – GLM-5.3 (low) vs. Codex – GPT-5.6 Luna (medium)
Metric	Terminus-2 – GLM-5.3 (low)	Codex – GPT-5.6 Luna (medium)
Geospatial Agent Index	66* (partial: attempt 1 on 485 of 488 tasks)	66* (partial: attempt 1 on 339 of 488 tasks)
Earth-Bench V2 score	57	60
GeoBenchX score	60	58
GS-QA2 score	80	79
GeoAgentBench score (guided GIS workflow; outside the index)	92	98
GeoAnalystBench score (guided GIS workflow; outside the index)	95	100
Raster and remote sensing score	75	78
Vector and overlay score	75	76
Climate and time series score	59	58
Spatial statistics and interpolation score	23	0
Mapping and cartography score	77	83
Recognising infeasible requests score	53	41
Cost per task	$0.26	$0.0084
Time per task	5.6 min	2.1 min
Tokens per attempt	214k	125k
Turns per attempt	10.3	8.9
Attempts decided	485	339
Input price per 1M tokens	$1.40	$0.20
Output price per 1M tokens	$4.40	$1.20
Context window	1,048,576	No data
Image input	No	No data
Developer	Z.ai	OpenAI

Charts

Partial coverage. Terminus-2 – GLM-5.3 (low): 218 of 221 GS-QA2 tasks; Codex – GPT-5.6 Luna (medium): 107 of 117 Earth-Bench V2 tasks; 43 of 150 GeoBenchX tasks; 189 of 221 GS-QA2 tasks. Grey placeholders identify these entries in the index, cost and output token charts; their height does not represent a value. Comparable bars appear when first-attempt coverage is complete. Their available results remain in the side-by-side table.

Geospatial Agent Index

Equal-weight average of the evaluation scores, 0 to 100 · Higher is better

Data table: Geospatial Agent Index

Geospatial Agent Index
Model	Creator	Geospatial Agent Index	Range while attempts are pending	Benchmarks covered	Coverage (attempts)

Cost per task

Average cost per task (USD) · Lower is better

How to read this chart

Not shown: partial coverage. 2 entries without a first attempt on every index task. What is still running is on the models page.

Data table: Cost per task

Cost per task
Model	Creator	Cost per task	Coverage (attempts)

Output tokens per task

Average output tokens per attempt, reasoning included · Lower is better

How to read this chart

Not shown: partial coverage. 2 entries without a first attempt on every index task. What is still running is on the models page.

Data table: Output tokens per task

Output tokens per task
Model	Creator	Output tokens per task	Coverage (attempts)

Frequently asked questions

Which scores higher on the Geospatial Agent Index, Terminus-2 – GLM-5.3 (low) or Codex – GPT-5.6 Luna (medium)?

Not comparable yet: Terminus-2 – GLM-5.3 (low) has partial coverage (218 of 221 GS-QA2 tasks) and Codex – GPT-5.6 Luna (medium) has partial coverage (107 of 117 Earth-Bench V2 tasks; 43 of 150 GeoBenchX tasks; 189 of 221 GS-QA2 tasks), so it is not ranked. Terminus-2 – GLM-5.3 (low): 485 of 722 scheduled attempts. Codex – GPT-5.6 Luna (medium): 339 of 722 scheduled attempts. Coverage is partial; scores can change as more attempts are decided.

Which is cheaper per task, Terminus-2 – GLM-5.3 (low) or Codex – GPT-5.6 Luna (medium)?

Codex – GPT-5.6 Luna (medium), at $0.0084 against $0.26 for Terminus-2 – GLM-5.3 (low).

Which writes fewer output tokens per task, Terminus-2 – GLM-5.3 (low) or Codex – GPT-5.6 Luna (medium)?

Codex – GPT-5.6 Luna (medium), at 2k against 10k for Terminus-2 – GLM-5.3 (low).

Which has the larger context window, Terminus-2 – GLM-5.3 (low) or Codex – GPT-5.6 Luna (medium)?

Not known yet: Codex – GPT-5.6 Luna (medium) has no context window data.

More: Terminus-2 – GLM-5.3 (low) · Codex – GPT-5.6 Luna (medium) · all comparisons