Compare DeepSeek V4 Flash from DeepSeek and Solar Pro4 from Upstage on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.
DeepSeek V4 Flash
Solar Pro4(This model currently points to the older 0423 version; if you need to request the latest version, you can choose the model deepseek-v4-flash-0731)DeepSeek-V4 features an ultra-long context of one million characters and achieves leading performance domestically and in the open-source domain in agent capabilities, world knowledge, and reasoning.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
DeepSeek V4 Flash: $0.284/M output tokens; Solar Pro4: $0.3/M. Use the cost calculator above to estimate your own workload.
DeepSeek V4 Flash: 1483; Solar Pro4: 1447 (LMArena coding leaderboard).
DeepSeek V4 Flash accepts 1,000,000 and Solar Pro4 accepts 524,288 input tokens.
DeepSeek V4 Flash accepts text input and supports tool calling, function calling, structured outputs and thinking; Solar Pro4 accepts text input and supports long context.
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