Pairwise benchmark snapshot · Aug 1, 2026
In this head-to-head showdown, Claude Opus 4.5 delivers higher overall intelligence and human-preferred responses (Elo 1,568 vs 1,536), while Claude Opus 4.5 leads in SWE-bench software engineering benchmarks (76.8%), while DeepSeek V4 Pro is more budget-friendly at $1.6/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Anthropic frontier coding and computer-use model. SWE-bench leader on the official mini-SWE-agent harness in the Feb 2026 refresh.
Open-weight-adjacent DeepSeek flagship. High reasoning density per dollar.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Simulate accuracy gains vs added response time & token cost
Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.
Δ 32 Arena Elo pts
70 tok/s
$1.6 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Claude Opus 4.5 | DeepSeek V4 Pro | Advantage Delta |
|---|---|---|---|
| Preference Elo | +32 | ||
| Coding Elo | +30 | ||
| LiveBench | +1.1% | ||
| SWE-bench | +5.2% | ||
| GPQA Diamond | +0.1% | ||
| Time to first token | +30 ms | ||
| Output speed | 62 tok/s | 70 tok/s | +8 tok/s |
| Input price | $0.4/1M | +$14.6/1M | |
| Output price | $1.6/1M | +$73.4/1M | |
| Context window | +40k |
Simulate monthly production API costs in USD (US Dollar).
DeepSeek V4 Pro is estimated to save $1,612.00/month ($19,344/year).
Higher SWE-bench (76.8%).
Lower output list price ($1.6/1M).
Lower TTFT (380 ms).
Larger window (200k).
Claude Opus 4.5 is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Claude Opus 4.5 | Higher SWE-bench (76.8%). |
| High-volume chat | DeepSeek V4 Pro | Lower output list price ($1.6/1M). |
| Voice / low-latency UI | Claude Opus 4.5 | Lower TTFT (380 ms). |
| Long-document RAG | Claude Opus 4.5 | Larger window (200k). |
| Screenshots / vision | Claude Opus 4.5 | Claude Opus 4.5 is the side marked multimodal in the catalog. |
Top DeepSeek vs top Anthropic Elo. Usually V4 Pro vs Opus 5. License and invoice decide as much as Elo.
2026-06 open-weight-adjacent flagship. The usual cheap-vs-Claude question starts here.
The Feb refresh made 4.5 a coding reference. Newer Opus SKUs exist; this row stays as the dated harness point.
Jan 2025 reasoning model. Still searched. V4 Pro is the newer DeepSeek buy.
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Verified Head-to-Head Telemetry
compare · Jun 13, 2026
DeepSeek vs Claude: the cheap-versus-frontier question, remapped
launch · Jun 12, 2026
DeepSeek V4 Pro: high reasoning density per dollar
launch · Feb 20, 2026
Claude Opus 4.5 and the Feb 2026 SWE-bench row we still cite
launch · Jan 20, 2025
DeepSeek R1 stays as the open-weights RL baseline