How do Claude Opus 5 and DeepSeek V4 Flash 0731 compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both Claude Opus 5 and DeepSeek V4 Flash 0731 when publicly disclosed.

LLM Comparison

Claude Opus 5 vs DeepSeek V4 Flash 0731: benchmark scores, pricing & comparison.

Q: Which is better: Claude Opus 5 or DeepSeek V4 Flash 0731?

AskClash compares Claude Opus 5 and DeepSeek V4 Flash 0731 side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, and context window so you can see which model wins on each benchmark.

Side-by-side Claude Opus 5 vs DeepSeek V4 Flash 0731 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Open live leaderboard Claude Opus 5 model page DeepSeek V4 Flash 0731 model page

Rank #1 vs #16AskClash overall scores 90.0 vs 56.1.

Pricing $5.00/$25.0 vs $0.14/$0.28Input and output token prices per 1M tokens when published.

Proprietary vs Open WeightAnthropic vs DeepSeek.

Claude Opus 5 vs DeepSeek V4 Flash 0731 benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

Metric	Claude Opus 5	DeepSeek V4 Flash 0731
Overall Score	90.0	56.1
Leaderboard Rank	#1	#16
RWT	9.0	—
HLE	64.7	37.0
GPQA	—	91.0
MATH-500	—	57.4
SWE-bench	96.0	79.0
SWE-Pro	79.2	—
Terminal-Bench	—	82.7
DeepSWE	73.6	54.4
MCP Atlas	85.8	69.0
ARC-AGI 2	90.4	—
MRCR	—	78.7
Input Price (per 1M tokens)	$5.00	$0.14
Output Price (per 1M tokens)	$25.0	$0.28
Context Window	1M	1M
Benchmarks Published	8	9

Claude Opus 5 vs DeepSeek V4 Flash 0731 head-to-head charts

Claude Opus 5 leads 5 and DeepSeek V4 Flash 0731 leads 0 of 5 shared benchmarks. DeepSeek V4 Flash 0731 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Claude Opus 5DeepSeek V4 Flash 0731

Overall

90.0Claude Opus 5

56.1DeepSeek V4 Flash 0731

HLE

64.7Claude Opus 5

37.0DeepSeek V4 Flash 0731

SWE-bench

96.0Claude Opus 5

79.0DeepSeek V4 Flash 0731

DeepSWE

73.6Claude Opus 5

54.4DeepSeek V4 Flash 0731

MCP Atlas

85.8Claude Opus 5

69.0DeepSeek V4 Flash 0731

Claude Opus 5

Input$5.00

Output$25.0

Workload$10

Context1M

DeepSeek V4 Flash 0731

Input$0.14

Output$0.28

Workload$0.20

Context1M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Claude Opus 5 and DeepSeek V4 Flash 0731 comparisons

Explore how Claude Opus 5 and DeepSeek V4 Flash 0731 stack up against other top-ranked LLMs.

Claude Opus 5 vs Claude Fable 5 Claude Fable 5 vs DeepSeek V4 Flash 0731 Claude Opus 5 vs GPT-5.6 Sol GPT-5.6 Sol vs DeepSeek V4 Flash 0731 Claude Opus 5 vs Kimi K3 Kimi K3 vs DeepSeek V4 Flash 0731 Claude Opus 5 vs Claude Opus 4.8 Claude Opus 4.8 vs DeepSeek V4 Flash 0731 Claude Opus 5 vs GPT-5.5 GPT-5.5 vs DeepSeek V4 Flash 0731

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.