Model comparison
GPT-5.4 Pro vs Interfaze Beta
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-5.4 Pro #44 (Estimated); Interfaze Beta unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.4 Pro and Interfaze Beta share 1 comparable benchmark result. 2 of 8 categories are comparable. 11 results are unique to GPT-5.4 Pro; 9 to Interfaze Beta.
Updated July 23, 2026- Shared results
- 1
- GPT-5.4 Pro only
- 11
- Interfaze Beta only
- 9
- Comparable categories
- 2 / 8
Treat this as a split decision. GPT-5.4 Pro makes more sense if multimodal & grounded is the priority or you need the larger 1.05M context window; Interfaze Beta is the better fit if knowledge is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
GPT-5.4 Pro and Interfaze Beta finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
GPT-5.4 Pro is also the more expensive model on tokens at $30.00 input / $180.00 output per 1M tokens, versus $1.50 input / $3.50 output per 1M tokens for Interfaze Beta. That is roughly 51.4x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 1M for Interfaze Beta.
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 Pro | Δ | Interfaze Beta |
|---|---|---|---|
| Knowledge | GPT-5.4 Pro58.7 | Margin→ 31.2 | Interfaze Beta89.9 |
| Multimodal | GPT-5.4 Pro94.0 | Margin← 22.9 | Interfaze Beta71.1 |
| Agentic | GPT-5.4 Pro89.3 | MarginNo overlap | Interfaze BetaNot measured |
| Reasoning | GPT-5.4 Pro83.3 | MarginNo overlap | Interfaze BetaNot measured |
| Math | GPT-5.4 Pro46.9 | MarginNo overlap | Interfaze BetaNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
MMMU-Pro
MultimodalA 94%B 71.1%Winner: GPT-5.4 ProΔ 22.9MMMU-Pro: GPT-5.4 Pro scored 94%; Interfaze Beta scored 71.1%. GPT-5.4 Pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.4 Pro | Interfaze Beta | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.4 Pro$30 input / $180 output | Interfaze Beta$1.5 input / $3.5 output | Interfaze Beta has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.4 Pro74 tok/s | Interfaze BetaNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.4 Pro151.79 s | Interfaze BetaNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.4 Pro1.05M | Interfaze Beta1M | GPT-5.4 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | GPT-5.4 Pro | Interfaze Beta | Result |
|---|---|---|---|
| BrowseCompSource | 89.3% | — | Not comparable |
Coding1 benchmarks
| Benchmark | GPT-5.4 Pro | Interfaze Beta | Result |
|---|---|---|---|
| Spider 2.0-LiteSource | — | 52.9% | Not comparable |
Reasoning2 benchmarks
KnowledgeInterfaze Beta wins7 benchmarks
Math4 benchmarks
MultimodalGPT-5.4 Pro wins5 benchmarks
Inst. Following1 benchmarks
| Benchmark | GPT-5.4 Pro | Interfaze Beta | Result |
|---|---|---|---|
| SOB Value AccSource | — | 79.5% | Not comparable |
Frequently Asked Questions (3)
Which is better, GPT-5.4 Pro or Interfaze Beta?
GPT-5.4 Pro and Interfaze Beta are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for knowledge tasks, GPT-5.4 Pro or Interfaze Beta?
Interfaze Beta has the edge for knowledge tasks in this comparison, averaging 89.9 versus 58.7. GPT-5.4 Pro stays close enough that the answer can still flip depending on your workload.
Which is better for multimodal and grounded tasks, GPT-5.4 Pro or Interfaze Beta?
GPT-5.4 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 94 versus 71.1. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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