Compare DeepSeek: DeepSeek V4 Flash 0731 (DeepSeek) and OpenAI: GPT-5.5 (OpenAI) by price, context, capabilities, and latency.
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| Model | Provider | Input | Output | Context | Capabilities | Best for | Latency | Status | Source |
|---|---|---|---|---|---|---|---|---|---|
| DeepSeek: DeepSeek V4 Flash 0731deepseek/deepseek-v4-flash-0731 | DeepSeek | $0.45 / 1M tokens | $1.33 / 1M tokens | 1.3M | StreamingTool callingJSON modeLong context | Chinese Q&A, general chat | 0-0ms | Catalog | Platform curated |
| OpenAI: GPT-5.5openai/gpt-5.5 | OpenAI | Starting at $5 / 1M tokens | $30 / 1M tokens | 1.1M | StreamingTool callingJSON modeVision | image understanding, multimodal chat | 1703-3835ms | Catalog | Platform curated |
FAQ
DeepSeek: DeepSeek V4 Flash 0731 is cheaper ($0.45 / 1M tokens input / $1.33 / 1M tokens output) vs OpenAI: GPT-5.5 ($5 / 1M tokens input / $30 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.
DeepSeek: DeepSeek V4 Flash 0731 is larger (1.3M tokens) vs 1.1M tokens.
Both target Long context. Pick DeepSeek: DeepSeek V4 Flash 0731 to optimize cost, or DeepSeek: DeepSeek V4 Flash 0731 for the longer context window. Test both on real prompts before committing production traffic.
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