Model comparison
Composer 2.5 vs GPT-5.4 Pro
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Composer 2.5 unranked (Not scored); GPT-5.4 Pro #44 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Composer 2.5 and GPT-5.4 Pro share 0 comparable benchmark results. 1 of 8 categories are comparable. 5 results are unique to Composer 2.5; 12 to GPT-5.4 Pro.
Updated July 23, 2026- Shared results
- 0
- Composer 2.5 only
- 5
- GPT-5.4 Pro only
- 12
- Comparable categories
- 1 / 8
Treat this as a split decision. Composer 2.5 makes more sense if you want the cheaper token bill; GPT-5.4 Pro is the better fit if agentic is the priority or you need the larger 1.05M context window.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Composer 2.5 and GPT-5.4 Pro 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 $0.50 input / $2.50 output per 1M tokens for Composer 2.5. That is roughly 72.0x on output cost alone. GPT-5.4 Pro gives you the larger context window at 1.05M, compared with 200K for Composer 2.5.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Composer 2.5 | GPT-5.4 Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Composer 2.5$0.5 input / $2.5 output | GPT-5.4 Pro$30 input / $180 output | Composer 2.5 has the lower combined listed price. |
| Generation speedtokens per second | Composer 2.5Not available | GPT-5.4 Pro74 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Composer 2.5Not available | GPT-5.4 Pro151.79 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Composer 2.5200K | GPT-5.4 Pro1.05M | GPT-5.4 Pro lists the larger context window. |
Benchmark Deep Dive
AgenticGPT-5.4 Pro wins2 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
Knowledge4 benchmarks
Math4 benchmarks
Multimodal1 benchmarks
| Benchmark | Composer 2.5 | GPT-5.4 Pro | Result |
|---|---|---|---|
| MMMU-ProSource | — | 94% | Not comparable |
Frequently Asked Questions (2)
Which is better, Composer 2.5 or GPT-5.4 Pro?
Composer 2.5 and GPT-5.4 Pro 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 agentic tasks, Composer 2.5 or GPT-5.4 Pro?
GPT-5.4 Pro has the edge for agentic tasks in this comparison, averaging 89.3 versus 69.3. Composer 2.5 stays close enough that the answer can still flip depending on your workload.
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