Model comparison
GPT-5.4 mini vs Inkling
Head-to-head evidence from 6 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: GPT-5.4 mini unranked; Inkling #17
BenchAlign evidence: GPT-5.4 mini estimated; Inkling not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.4 mini and Inkling share 6 comparable benchmark results. 4 of 8 categories are comparable. 25 results are unique to GPT-5.4 mini; 10 to Inkling.
Updated July 15, 2026- Shared results
- 6
- GPT-5.4 mini only
- 25
- Inkling only
- 10
- Comparable categories
- 4 / 8
Pick Inkling if you want the stronger benchmark profile. GPT-5.4 mini only becomes the better choice if multimodal & grounded is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 6 shared benchmark results across 3 evidence categories; 4 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Inkling is clearly ahead on the provisional aggregate, 69 to 64. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Inkling's sharpest advantage is in mathematics, where it averages 97.1 against 21.7. The single biggest benchmark swing on the page is HLE, 41.5% to 46%. GPT-5.4 mini does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
Inkling is also the more expensive model on tokens at $1.87 input / $4.68 output per 1M tokens, versus $0.75 input / $4.50 output per 1M tokens for GPT-5.4 mini. GPT-5.4 mini is the reasoning model in the pair, while Inkling is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Inkling gives you the larger context window at 1M, compared with 400K for GPT-5.4 mini.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | GPT-5.4 mini | Δ | Inkling |
|---|---|---|---|
| Math | GPT-5.4 mini21.7 | Margin→ 75.4 | Inkling97.1 |
| Knowledge | GPT-5.4 mini47.8 | Margin→ 3.9 | Inkling51.7 |
| Agentic | GPT-5.4 mini65.7 | Margin→ 3.7 | Inkling69.4 |
| Multimodal | GPT-5.4 mini76.6 | Margin← 0.1 | Inkling76.5 |
| Coding | GPT-5.4 miniNot measured | MarginNo overlap | Inkling68.6 |
| Inst. Following | GPT-5.4 miniNot measured | MarginNo overlap | Inkling79.8 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
HLE
KnowledgeA 41.5%B 46%Winner: InklingΔ 4.5HLE: GPT-5.4 mini scored 41.5%; Inkling scored 46%. Inkling wins this benchmark. - Source ↗
Terminal-Bench 2.0
AgenticA 60%B 63.8%Winner: InklingΔ 3.8Terminal-Bench 2.0: GPT-5.4 mini scored 60%; Inkling scored 63.8%. Inkling wins this benchmark. - Source ↗
MMMU-Pro
MultimodalA 76.6%B 73.5%Winner: GPT-5.4 miniΔ 3.1MMMU-Pro: GPT-5.4 mini scored 76.6%; Inkling scored 73.5%. GPT-5.4 mini wins this benchmark. - Source ↗
GPQA
KnowledgeA 88%B 87.9%Winner: GPT-5.4 miniΔ 0.1GPQA: GPT-5.4 mini scored 88%; Inkling scored 87.9%. GPT-5.4 mini wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.4 mini | Inkling | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.4 mini$0.75 input / $4.5 output | Inkling$1.87 input / $4.68 output | GPT-5.4 mini has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.4 mini201 tok/s | InklingNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.4 mini3.85 s | InklingNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.4 mini400K | Inkling1M | Inkling lists the larger context window. |
Benchmark Deep Dive
AgenticInkling wins11 benchmarks
| Benchmark | GPT-5.4 mini | Inkling | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 60% | 63.8% | Inkling leads |
| OSWorld-VerifiedSource | 72.1% | — | Not comparable |
| MCP AtlasSource | 57.7% | 74.1% | Inkling leads |
| ToolathlonSource | 42.9% | — | Not comparable |
| τ²-bench resultsSource | 93.4% | — | Not comparable |
| AA Agentic IndexSource | 30.2% | — | Not comparable |
| APEX-Agents-AASource | 28.2% | — | Not comparable |
| GDPval-AASource | 33.5% | — | Not comparable |
| GDPval-AASource | 1171 | — | Not comparable |
| BrowseCompSource | — | 77.1% | Not comparable |
| Design Arena Agentic Web DevSource | — | 1258 | Not comparable |
Coding8 benchmarks
| Benchmark | GPT-5.4 mini | Inkling | Result |
|---|---|---|---|
| Vibe Code BenchSource | 47.97% | — | Not comparable |
| AA Coding IndexSource | 56.1% | — | Not comparable |
| Terminal-Bench HardSource | 52.3% | — | Not comparable |
| AA-SciCodeSource | 49.9% | — | Not comparable |
| FrontierCodeSource | 27.0% | — | Not comparable |
| SWE-bench VerifiedSource | — | 77.6% | Not comparable |
| SWE-bench ProSource | — | 54.3% | Not comparable |
| Terminal-Bench 2.0Source | — | 63.8% | Not comparable |
Reasoning2 benchmarks
KnowledgeInkling wins10 benchmarks
| Benchmark | GPT-5.4 mini | Inkling | Result |
|---|---|---|---|
| GPQASource | 88% | 87.9% | GPT-5.4 mini leads |
| HLESource | 41.5% | 46% | Inkling leads |
| HLE w/o toolsSource | 28.2% | 30% | Inkling leads |
| Artificial Analysis Intelligence IndexSource | 40.0% | — | Not comparable |
| AA-GPQA DiamondSource | 87.5% | — | Not comparable |
| AA-HLESource | 26.6% | — | Not comparable |
| AA-Omniscience IndexSource | -18.7% | — | Not comparable |
| AA-Omniscience AccuracySource | 37.5% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 89.8% | — | Not comparable |
| GPQA-DSource | — | 87.9% | Not comparable |
MathInkling wins3 benchmarks
MultimodalGPT-5.4 mini wins5 benchmarks
Frequently Asked Questions (5)
Which is better, GPT-5.4 mini or Inkling?
Inkling is ahead on BenchLM's provisional leaderboard, 69 to 64. The biggest single separator in this matchup is HLE, where the scores are 41.5% and 46%.
Which is better for knowledge tasks, GPT-5.4 mini or Inkling?
Inkling has the edge for knowledge tasks in this comparison, averaging 51.7 versus 47.8. Inside this category, HLE is the benchmark that creates the most daylight between them.
Which is better for math, GPT-5.4 mini or Inkling?
Inkling has the edge for math in this comparison, averaging 97.1 versus 21.7. GPT-5.4 mini stays close enough that the answer can still flip depending on your workload.
Which is better for agentic tasks, GPT-5.4 mini or Inkling?
Inkling has the edge for agentic tasks in this comparison, averaging 69.4 versus 65.7. Inside this category, MCP Atlas is the benchmark that creates the most daylight between them.
Which is better for multimodal and grounded tasks, GPT-5.4 mini or Inkling?
GPT-5.4 mini has the edge for multimodal and grounded tasks in this comparison, averaging 76.6 versus 76.5. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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