DeepSeek V4.1 Flash (Max) vs GPT-5.5 Instant (June 2026)
Which is better for the money: DeepSeek V4.1 Flash (Max) 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.
Clear winner
Verdict
Pick DeepSeek V4.1 Flash (Max)
GPT-5.5 Instant (June 2026) vs DeepSeek V4.1 Flash (Max): 34.2% less intelligence, 76.3% more cost to run the AA benchmark, and 10.2% slower end-to-end.
| Metric | DeepSeek V4.1 Flash (Max) | GPT-5.5 Instant (June 2026) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.5 | 26.0 | −34.2% GPT-5.5 Instant (June… is 34.2% less intelligent |
| Total AA cost (lower is better) | $671.96 | $1,184.34 | +76.3% GPT-5.5 Instant (June… is 76.3% more expensive |
| End-to-end time (lower is better) | 15.14s | 16.68s | +10.2% GPT-5.5 Instant (June… is 10.2% slower |
| Price per 1M tokens (in / out) | $0.29 / $1.20 | $5.00 / $30.0 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- DeepSeek V4.1 Flash (Max) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- GPT-5.5 Instant (June 2026) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
DeepSeek V4.1 Flash (Max)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/gpt-5-5-instant-06-26 · Markdown: /api/v1/compare/deepseek-v4-1-flash/gpt-5-5-instant-06-26?format=md · llms.txt · agent skill