DeepSeek V4.1 Flash vs GPT-5.5
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
DeepSeek V4.1 Flash
B
GPT-5.5
- ProviderDeepSeekOpenAI
- Rank#17Higher rank#23
- TierSHigher tierA
- Score85.7Higher score84.0
- PriceAPI $0.30 input / $1.20 output per 1M tokens at peak ($0.15 / $0.60 off-peak); MIT open weightsLower price tierAPI $5 input / $30 output per 1M tokens
- TaglineDeepSeek's September 2026 Flash model on a new architecture, adding native image understanding and a 1M-token context at lower API prices.OpenAI's April 2026 flagship for complex professional and agentic coding work, since followed by the GPT-5.6 family (July 2026) and GPT-6 Astra (September 2026).
| Attribute | DeepSeek V4.1 Flash | GPT-5.5 |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Rank | #17Higher rank | #23 |
| Tier | SHigher tier | A |
| Score | 85.7Higher score | 84.0 |
| Price | API $0.30 input / $1.20 output per 1M tokens at peak ($0.15 / $0.60 off-peak); MIT open weightsLower price tier | API $5 input / $30 output per 1M tokens |
| Tagline | DeepSeek's September 2026 Flash model on a new architecture, adding native image understanding and a 1M-token context at lower API prices. | OpenAI's April 2026 flagship for complex professional and agentic coding work, since followed by the GPT-5.6 family (July 2026) and GPT-6 Astra (September 2026). |