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Independent model comparison

GPT-5.4 Mini vs GPT-5.6 Sol: evidence side by side

Compare the models using only evidence that can be identified and attributed. Exact benchmark matches appear first; independent facts and user reports remain separate and do not create an overall ranking.

Exact comparison coverage

1 benchmark record share an exact reviewed comparison key.

Evidence strength

Limited exact coverage

The page is useful for inspection but does not yet contain enough pair-native evidence for Search publication.

Models at a glance

Key differences

Detail GPT-5.4 Mini GPT-5.6 Sol
Provider

OpenAI

OpenAI

Release date Shown only where an exact reviewed release date is available.

Not verified

2026-07-09

Input price Artificial Analysis operational reference; see the attributed details below.

Not verified

$5.00 / 1M tokens

Output price Artificial Analysis operational reference; see the attributed details below.

Not verified

$30.00 / 1M tokens

Median output speed Artificial Analysis operational reference; see the attributed details below.

Not verified

55.9 tok/s

Exact benchmark coverage Only records carrying the same reviewed comparison identity are counted.

1 shared record

1 shared record

Price and speed appear only when an exact reviewed operational reference is attached to that model identity.

Primary comparison evidence

Exact matched benchmark evidence

1 exact match

A shared benchmark name is not enough. A result appears side by side only when both model records carry the same reviewed comparison key. Duplicate or unversioned records are omitted rather than guessed into alignment.

ROASBench

A 12-month performance-marketing simulation scored on business outcomes, planning, behavior, and persona fit.

GPT-5.4 Mini

11.83

Average ROASBench score

Configuration: OpenAI: GPT-5.4 Mini

Spring Prompt · Reviewed public-catalogue SQLite projection · 12-month simulation

GPT-5.6 Sol

4 configurations

Average ROASBench score

Configuration: 4 configurations compared separately

Spring Prompt · Reviewed public-catalogue SQLite projection · 12-month simulation

Secondary context · not head-to-head

Independent signals for each model

The sources below evaluated or discussed each model independently. Putting them in adjacent columns makes them easier to inspect, but it does not make their metrics, samples, or observations directly comparable.

Attributed third-party facts

Artificial Analysis details

These facts retain their source, date, protocol, and model identity. They are contextual model-level signals—not a Spring Prompt overall score.

GPT-5.4 Mini

No reviewed Artificial Analysis record is attached to this model snapshot.

GPT-5.6 Sol

Input price

$5.00 / 1M tokens

Representative configuration on the cited source page.

Artificial Analysis · as of 16 Jul 2026

Output price

$30.00 / 1M tokens

Representative configuration on the cited source page.

Artificial Analysis · as of 16 Jul 2026

Median output speed

55.9 tok/s

Median output tokens received per second after generation begins; this excludes time to first token and is not end-to-end response latency.

Artificial Analysis · as of 16 Jul 2026

Anecdotal model-level reports

Initial community opinions from Reddit

Recurring themes from each model's declared observation window. They are not a representative survey and are not direct comparisons between these models.

GPT-5.4 Mini

No editor-reviewed Reddit opinions paragraph is active for this model snapshot.

GPT-5.6 Sol

Initial community opinions

The search-indexed launch-window sample highlighted GPT-5.6 Sol's autonomous code review, broad bug discovery, project comprehension, and promising frontend output. Counter-reports focused on heavy quota use, slow execution, overengineering, guardrail interference, rollout friction, and occasional basic mistakes. Strong initial results therefore sat alongside unresolved cost and consistency concerns.

Source venue: Reddit · window: 2026-07-09 to 2026-07-23 · observed items: 4

How to read this comparison

Spring Prompt does not name an overall winner from unrelated benchmark scores, third-party metrics, Reddit opinions, or X field-test reports.

Different benchmarks measure different constructs and may use different populations, prompts, harnesses, model revisions, tools, and score scales. This page does not average those values or infer a winner from source coverage. Test both models on your own production work before making a consequential choice.