Benchmark scores
Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.
LLM Comparison
DeepSeek V4.1 Flash vs Claude Haiku 5.5: benchmark scores, pricing & comparison.
Side-by-side DeepSeek V4.1 Flash vs Claude Haiku 5.5 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.
Verdict: DeepSeek V4.1 Flash ranks higher (#25 vs #26); Claude Haiku 5.5 costs less ($0.10/$0.50 vs $0.15/$0.60 per 1M tokens).
Rank #25 vs #26AskClash overall scores 54.1 vs 53.8.
Pricing $0.15/$0.60 vs $0.10/$0.50Input and output token prices per 1M tokens when published.
API vs ProprietaryDeepSeek vs Anthropic.
DeepSeek V4.1 Flash vs Claude Haiku 5.5 benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | DeepSeek V4.1 Flash | Claude Haiku 5.5 |
|---|---|---|
| Overall Score | 54.1 | 53.8 |
| Leaderboard Rank | #25 | #26 |
| ACB | 63.0 | 63.5 |
| Coding Agent Index | 47.3 | 37.3 |
| HLE | 36.8 | 57.4 |
| GPQA | 90.9 | — |
| SWE-Pro | — | 64.8 |
| SWE-Atlas | 61.0 | 33.9 |
| Terminal-Bench | 26.8 | 32.8 |
| DeepSWE | 74.2 | — |
| GDPval-AA | — | 1620.0 |
| Finance Agent | 65.4 | 65.4 |
| Input Price (per 1M tokens) | $0.15 | $0.10 |
| Output Price (per 1M tokens) | $0.60 | $0.50 |
| Context Window | 1M | 1M |
| Benchmarks Published | 8 | 11 |
DeepSeek V4.1 Flash vs Claude Haiku 5.5 head-to-head charts
DeepSeek V4.1 Flash leads 4 and Claude Haiku 5.5 leads 3 of 7 shared benchmarks. Claude Haiku 5.5 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.
DeepSeek V4.1 FlashClaude Haiku 5.5
Overall
ACB
Coding Agent Index
HLE
SWE-Atlas
Terminal-Bench
Finance Agent
DeepSeek V4.1 Flash
Input$0.15
Output$0.60
Workload$0.27
Context1M
Claude Haiku 5.5
Input$0.10
Output$0.50
Workload$0.20
Context1M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More DeepSeek V4.1 Flash and Claude Haiku 5.5 comparisons
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How to read this comparison
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.