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 GPT-5.6 Luna: benchmark scores, pricing & comparison.
Side-by-side DeepSeek V4.1 Flash vs GPT-5.6 Luna 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.
Rank #22 vs #24AskClash overall scores 61.7 vs 59.2.
Pricing $0.15/$0.60 vs $1.00/$6.00Input and output token prices per 1M tokens when published.
API vs ProprietaryDeepSeek vs OpenAI.
DeepSeek V4.1 Flash vs GPT-5.6 Luna 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 | GPT-5.6 Luna |
|---|---|---|
| Overall Score | 61.7 | 59.2 |
| Leaderboard Rank | #22 | #24 |
| ACB | — | 56.1 |
| RWT | — | 9.5 |
| Coding Agent Index | — | 75.0 |
| HLE | 36.8 | 39.5 |
| GPQA | 90.9 | 92.3 |
| SWE-Pro | — | 62.7 |
| SWE-Atlas | — | 81.0 |
| Terminal-Bench | 90.6 | 84.7 |
| DeepSWE | 74.2 | 67.2 |
| GDPval-AA | — | 1592.0 |
| Finance Agent | — | 55.0 |
| MMMU-Pro | — | 78.4 |
| ARC-AGI 2 | — | 59.5 |
| MRCR | — | 41.3 |
| Input Price (per 1M tokens) | $0.15 | $1.00 |
| Output Price (per 1M tokens) | $0.60 | $6.00 |
| Context Window | 1M | 1M |
| Benchmarks Published | 4 | 14 |
DeepSeek V4.1 Flash vs GPT-5.6 Luna head-to-head charts
DeepSeek V4.1 Flash leads 3 and GPT-5.6 Luna leads 2 of 5 shared benchmarks. DeepSeek V4.1 Flash is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.
DeepSeek V4.1 FlashGPT-5.6 Luna
Overall
HLE
GPQA
Terminal-Bench
DeepSWE
DeepSeek V4.1 Flash
Input$0.15
Output$0.60
Workload$0.27
Context1M
GPT-5.6 Luna
Input$1.00
Output$6.00
Workload$2.20
Context1M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More DeepSeek V4.1 Flash and GPT-5.6 Luna comparisons
Explore how DeepSeek V4.1 Flash and GPT-5.6 Luna stack up against other top-ranked LLMs.
Claude Fable 5.1 vs DeepSeek V4.1 FlashClaude Fable 5.1 vs GPT-5.6 LunaClaude Fable 5 vs DeepSeek V4.1 FlashClaude Fable 5 vs GPT-5.6 LunaClaude Opus 5 vs DeepSeek V4.1 FlashClaude Opus 5 vs GPT-5.6 LunaGPT-5.6 Sol vs DeepSeek V4.1 FlashGPT-5.6 Sol vs GPT-5.6 LunaQwen3.8 Max vs DeepSeek V4.1 FlashQwen3.8 Max vs GPT-5.6 Luna
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.