Output tokens cost $0.56 per million on DeepSeek V4 Flash 0731 Fast and $6.00 per million on Grok 4.5. Input tokens cost $0.28 per million on DeepSeek V4 Flash 0731 Fast and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.07 per million on DeepSeek V4 Flash 0731 Fast and $0.50 per million on Grok 4.5. Context lengths are 1,000,000 tokens on DeepSeek V4 Flash 0731 Fast and 500,000 tokens on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 3.7s on DeepSeek V4 Flash 0731 Fast and 3.0s on Grok 4.5. Measured output throughput is 129.8 tok/s on DeepSeek V4 Flash 0731 Fast and 33.5 tok/s on Grok 4.5. On the LMArena coding leaderboard DeepSeek V4 Flash 0731 Fast scores 1483 and Grok 4.5 scores 1522.
DeepSeek V4 Flash 0731 Fast
Grok 4.5DeepSeek V4 Flash 0731 Fast is a high-speed deployment of DeepSeek’s agentic model provided by Wafer, designed for coding, tool use, and high-volume agent workloads. It preserves the capabilities of V4 Flash 0731 while delivering much faster inference. Compared with V4 Pro, it prioritizes latency and execution efficiency.
Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.
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 0731 Fast: $0.56/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.
Grok 4.5: 1522; DeepSeek V4 Flash 0731 Fast: 1483 (LMArena coding leaderboard).
Grok 4.5: 3.0s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
DeepSeek V4 Flash 0731 Fast accepts 1,000,000 and Grok 4.5 accepts 500,000 input tokens. Maximum output per request is 384,000 tokens on DeepSeek V4 Flash 0731 Fast and 500,000 tokens on Grok 4.5.
DeepSeek V4 Flash 0731 Fast at 129.8 tok/s and Grok 4.5 at 33.5 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
DeepSeek V4 Flash 0731 Fast accepts text input and supports tool calling, function calling, structured outputs and thinking; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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