Model comparison
Composer 2.5 vs DeepSeek V4 Pro (High)
Head-to-head evidence from 3 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Composer 2.5 unranked (Not scored); DeepSeek V4 Pro (High) #81 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Composer 2.5 and DeepSeek V4 Pro (High) share 3 comparable benchmark results. 1 of 8 categories are comparable. 2 results are unique to Composer 2.5; 35 to DeepSeek V4 Pro (High).
Updated July 23, 2026- Shared results
- 3
- Composer 2.5 only
- 2
- DeepSeek V4 Pro (High) only
- 35
- Comparable categories
- 1 / 8
Treat this as a split decision. Composer 2.5 makes more sense if its workflow fits your team better; DeepSeek V4 Pro (High) is the better fit if agentic is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 3 shared benchmark results across 2 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 DeepSeek V4 Pro (High) 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.
Composer 2.5 is also the more expensive model on tokens at $0.50 input / $2.50 output per 1M tokens, versus $0.43 input / $0.87 output per 1M tokens for DeepSeek V4 Pro (High). That is roughly 2.9x on output cost alone. DeepSeek V4 Pro (High) gives you the larger context window at 1M, compared with 200K for Composer 2.5.
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 | Composer 2.5 | Δ | DeepSeek V4 Pro (High) |
|---|---|---|---|
| Agentic | Composer 2.569.3 | Margin→ 1.3 | DeepSeek V4 Pro (High)70.6 |
| Coding | Composer 2.5Not measured | MarginNo overlap | DeepSeek V4 Pro (High)69.8 |
| Knowledge | Composer 2.5Not measured | MarginNo overlap | DeepSeek V4 Pro (High)57.0 |
| Math | Composer 2.5Not measured | MarginNo overlap | DeepSeek V4 Pro (High)94.0 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 69.3%B 63.3%Winner: Composer 2.5Δ 6Terminal-Bench 2.0: Composer 2.5 scored 69.3%; DeepSeek V4 Pro (High) scored 63.3%. Composer 2.5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Composer 2.5 | DeepSeek V4 Pro (High) | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Composer 2.5$0.5 input / $2.5 output | DeepSeek V4 Pro (High)$0.435 input / $0.87 output | DeepSeek V4 Pro (High) has the lower combined listed price. |
| Generation speedtokens per second | Composer 2.5Not available | DeepSeek V4 Pro (High)Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Composer 2.5Not available | DeepSeek V4 Pro (High)Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Composer 2.5200K | DeepSeek V4 Pro (High)1M | DeepSeek V4 Pro (High) lists the larger context window. |
Benchmark Deep Dive
AgenticDeepSeek V4 Pro (High) wins9 benchmarks
| Benchmark | Composer 2.5 | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 69.3% | 63.3% | Composer 2.5 leads |
| BrowseCompSource | — | 80.4% | Not comparable |
| HLE w/ toolsSource | — | 44.7% | Not comparable |
| MCP AtlasSource | — | 74.2% | Not comparable |
| ToolathlonSource | — | 49% | Not comparable |
| τ²-bench resultsSource | — | 94.2% | Not comparable |
| GDPval-AASource | — | 39.9% | Not comparable |
| GDPval-AASource | — | 1299 | Not comparable |
| AA Agentic IndexSource | — | 34.4% | Not comparable |
Coding9 benchmarks
| Benchmark | Composer 2.5 | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 69.3% | 63.3% | Composer 2.5 leads |
| SWE MultilingualSource | 79.8% | 74.1% | Composer 2.5 leads |
| cursorBench31Source | 63.2% | — | Not comparable |
| cursorBench32Source | 56.1% | — | Not comparable |
| CodeforcesSource | — | 2919.0 | Not comparable |
| SWE-bench VerifiedSource | — | 79.4% | Not comparable |
| SWE-bench ProSource | — | 54.4% | Not comparable |
| AA-SciCodeSource | — | 46.4% | Not comparable |
| AA Coding IndexSource | — | 58.7% | Not comparable |
Reasoning4 benchmarks
Knowledge12 benchmarks
| Benchmark | Composer 2.5 | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| MMLU-ProSource | — | 87.1% | Not comparable |
| SimpleQASource | — | 46.2% | Not comparable |
| Chinese-SimpleQASource | — | 77.7% | Not comparable |
| GPQASource | — | 89.1% | Not comparable |
| GPQA-DSource | — | 89.1% | Not comparable |
| HLESource | — | 34.5% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 43.1% | Not comparable |
| AA-GPQA DiamondSource | — | 90.5% | Not comparable |
| AA-HLESource | — | 33.5% | Not comparable |
| AA-Omniscience IndexSource | — | -9.7% | Not comparable |
| AA-Omniscience AccuracySource | — | 41.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 88.6% | Not comparable |
Math4 benchmarks
Multimodal1 benchmarks
| Benchmark | Composer 2.5 | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| Design Arena WebsiteSource | — | 1264 | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Composer 2.5 | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 71.3% | Not comparable |
Frequently Asked Questions (2)
Which is better, Composer 2.5 or DeepSeek V4 Pro (High)?
Composer 2.5 and DeepSeek V4 Pro (High) 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 DeepSeek V4 Pro (High)?
DeepSeek V4 Pro (High) has the edge for agentic tasks in this comparison, averaging 70.6 versus 69.3. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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