Terminus-2 – gpt-oss-120b (low) vs. Codex – GPT-6 Sol (medium): geospatial agent comparison

Comparison between Terminus-2 – gpt-oss-120b (low) and Codex – GPT-6 Sol (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 – gpt-oss-120b (low) vs. Codex – GPT-6 Sol (medium)
Metric	Terminus-2 – gpt-oss-120b (low)	Codex – GPT-6 Sol (medium)
Geospatial Agent Index	31*	77* (partial: attempt 1 on 193 of 488 tasks)
Earth-Bench V2 score	28	80
GeoBenchX score	37	64
GS-QA2 score	29	88
GeoAgentBench score (guided GIS workflow; outside the index)	60	100
GeoAnalystBench score (guided GIS workflow; outside the index)	47	No data
Raster and remote sensing score	25	87
Vector and overlay score	34	86
Climate and time series score	29	83
Spatial statistics and interpolation score	8	50
Mapping and cartography score	21	100
Recognising infeasible requests score	60	50
Cost per task	$0.0046	$0.048
Time per task	0.7 min	1.3 min
Tokens per attempt	11k	87k
Turns per attempt	2.9	6.5
Attempts decided	488	193
Input price per 1M tokens	$0.35	$2.00
Output price per 1M tokens	$0.75	$10.00
Context window	128,000	No data
Image input	No	No data
Developer	OpenAI	OpenAI

Charts

Partial coverage. Codex – GPT-6 Sol (medium): 55 of 117 Earth-Bench V2 tasks; 11 of 150 GeoBenchX tasks; 127 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

Attempts still to run

Data table: Geospatial Agent Index

Geospatial Agent Index
Model	Creator	Geospatial Agent Index	Range while attempts are pending	Benchmarks covered	Coverage (attempts)
Terminus-2 – gpt-oss-120b (low)	OpenAI	31*	No pending judgements; coverage incomplete	3 of 3	488 of 722 scheduled attempts

Cost per task

Average cost per task (USD) · Lower is better

Attempts still to run

How to read this chart

Not shown: partial coverage. 1 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)
Terminus-2 – gpt-oss-120b (low)	OpenAI	$0.0046	488 of 722 scheduled attempts

Output tokens per task

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

Attempts still to run

How to read this chart

Not shown: partial coverage. 1 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)
Terminus-2 – gpt-oss-120b (low)	OpenAI	2k	488 of 722 scheduled attempts

Frequently asked questions

Which scores higher on the Geospatial Agent Index, Terminus-2 – gpt-oss-120b (low) or Codex – GPT-6 Sol (medium)?

Not comparable yet: Codex – GPT-6 Sol (medium) has partial coverage (55 of 117 Earth-Bench V2 tasks; 11 of 150 GeoBenchX tasks; 127 of 221 GS-QA2 tasks), so it is not ranked. Terminus-2 – gpt-oss-120b (low): 488 of 722 scheduled attempts. Codex – GPT-6 Sol (medium): 193 of 722 scheduled attempts. Coverage is partial; scores can change as more attempts are decided.

Which is cheaper per task, Terminus-2 – gpt-oss-120b (low) or Codex – GPT-6 Sol (medium)?

Terminus-2 – gpt-oss-120b (low), at $0.0046 against $0.048 for Codex – GPT-6 Sol (medium).

Which writes fewer output tokens per task, Terminus-2 – gpt-oss-120b (low) or Codex – GPT-6 Sol (medium)?

Codex – GPT-6 Sol (medium), at 1k against 2k for Terminus-2 – gpt-oss-120b (low).

Which has the larger context window, Terminus-2 – gpt-oss-120b (low) or Codex – GPT-6 Sol (medium)?

Not known yet: Codex – GPT-6 Sol (medium) has no context window data.

More: Terminus-2 – gpt-oss-120b (low) · Codex – GPT-6 Sol (medium) · all comparisons