DeepSeek V4.1 Flash (Non-reasoning) vs GPT-5.5 Instant (June 2026)
Which is better for the money: DeepSeek V4.1 Flash (Non-reasoning) by DeepSeek or GPT-5.5 Instant (June 2026) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-5.5 Instant (June 2026) scores 1.3 points higher (26.0 vs 24.7) but costs 5.1× as much to run the benchmark ($987 vs $194; premium vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 Instant (June 2026) when you need intelligence above 24.7, and DeepSeek V4.1 Flash (Non-reasoning) when 24.7 is enough.
| Metric | DeepSeek V4.1 Flash (Non-reasoning) | GPT-5.5 Instant (June 2026) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 24.7 | 26.0 | +5.3% GPT-5.5 Instant (June… is 5.3% more intelligent |
| Total AA cost (lower is better) | $193.84 | $986.85 | +409.1% GPT-5.5 Instant (June… is 5.1× more expensive |
| End-to-end time (lower is better) | 2.91s | 16.68s | +473.2% GPT-5.5 Instant (June… is 473.2% slower |
| Price per 1M tokens (in / out) | $0.30 / $1.20 | $5.00 / $30.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.5 Instant (June 2026) vs DeepSeek V4.1 Flash (Non-reasoning): 5.3% more intelligence, 409.1% more cost to run the AA benchmark, and 473.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- DeepSeek V4.1 Flash (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Terra (Medium) scores 41.30 for $175.
- GPT-5.5 Instant (June 2026) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
DeepSeek V4.1 Flash (Non-reasoning)GPT-5.5 Instant (June 2026)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/deepseek-v4-1-flash-non-reasoning/gpt-5-5-instant-06-26 · Markdown: /api/v1/compare/deepseek-v4-1-flash-non-reasoning/gpt-5-5-instant-06-26?format=md · llms.txt · agent skill