DeepSeek V4 Pro vs Gemini 3.1 Flash-Lite
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Gemini 3.1 Flash-Lite is 71.6% cheaper on blended cost ($0.563 vs $1.98/Mtok) — note: different model classes (budget vs mid tier)
| Specification |
by DeepSeek
4 providers:
DeepSeek $1.32/$3.96
Fireworks $1.32/$3.96
Together $1.32/$3.96
DeepInfra $1.30/$2.60
|
by Google
|
|---|---|---|
| Overview | ||
| Status | Current mid tier | Deprecated budget |
| Released | ||
| Pricing per million tokens | ||
| Input | $1.32/Mtok | $0.250/Mtok |
| Output | $3.96/Mtok | $1.50/Mtok |
| Blended avg | $1.98/Mtok | $0.563/Mtok |
| Cached input | $0.044/Mtok | — |
| Price basis | DeepSeek bills this model at TWO rates depending on the hour. The tracked figure is the PEAK rate: $1.32 input / $0.044 cached input / $3.96 output per 1M tokens. Off-peak is exactly half: $0.66 / $0.022 / $1.98. Peak hours are 01:00-04:00 and 06:00-10:00 UTC, Monday through Friday; every other hour, and all of Saturday and Sunday, is off-peak. Peak is the headline here because DeepSeek defines off-peak as half of peak rather than the other way round, so peak is the list rate, and because a caller who does not schedule around the clock needs the published number to be a ceiling rather than a floor. Halve it for a workload that runs entirely outside those hours. Until 16:00 UTC on 2026-08-16 this model billed a single flat $0.435 / $0.003625 / $0.87. These rates were announced on 2026-09-10 to stop being purchasable at 2026-09-14T04:00Z; DeepSeek withdrew that on 2026-09-11, stating the billing method is unchanged past 2026-09-14, so they remain the live rates. | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
text
|
textimageaudiovideo
|
| Benchmarks sources: Vellum LLM Leaderboard / Google model card | ||
| GPQA Diamond | 90.1 | 50 vendor |
| SWE-Bench Verified | 80.6 vendor | 30 vendor |
| Humanity's Last Exam | 48.2 | 15 vendor |
| ARC-AGI 2 | 30 | 18 vendor |
| AIME 2025 | 75 | 50 vendor |
| MMMLU | 82 | 72 vendor |
| BFCL | 72 | 60 vendor |
| HumanEval | 80.6 | 78 vendor |
| MATH 500 | 80 | 65 vendor |
| Avg benchmark score | 73.5 | — |
| Perf / dollar | 37.1 | — |
| LiveCodeBench | 93.5 | — |
| MCP Atlas | 73.6 | — |
| BrowseComp | 83.4 | — |
| Independent composite scores each on its own scale — not part of the average above | ||
| AA Intelligence Index | 36.3 | 16 |
| AA Agentic Index | 42.3 | 3.2 |
| AA-Omniscience Index (−100–100) | 0.8 | -16.4 |
| GDPval-AA v2 | 1493.3 ELO | — |
| LMSYS Chatbot Arena | 1457.5 ELO | — |
| Providers | ||
| Available from |
DeepSeek — $1.32/$3.96/Mtok
Fireworks — $1.32/$3.96/Mtok
Together — $1.32/$3.96/Mtok
DeepInfra — $1.30/$2.60/Mtok
|
Google — $0.250/$1.50/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | DeepSeek V4 Pro | Gemini 3.1 Flash-Lite | Savings |
|---|---|---|---|
| 1M tokens | $1.98 | $0.56 | $1.42 (71.7%) |
| 10M tokens | $19.8 | $5.63 | $14.18 (71.6%) |
| 100M tokens | $198 | $56.25 | $141.75 (71.6%) |
| 1000M tokens | $1980 | $562.5 | $1417.5 (71.6%) |
When to pick which
distilled from the pricing and spec data above
Pick DeepSeek V4 Pro if…
- your workload re-reads context (agents, RAG, long chats): cached input costs $0.044/Mtok — 97% off its list input price, a discount Gemini 3.1 Flash-Lite doesn't offer
- provider flexibility: available from 4 providers, so you can price-shop hosts or fail over
Pick Gemini 3.1 Flash-Lite if…
- cost dominates: $0.563/Mtok blended vs $1.98 — 71.6% less on the same 50/50 token mix
Price movement
recorded changes since we began tracking each model · last checked| Model | Changes | Latest move | Old → new $/M |
|---|---|---|---|
| DeepSeek V4 Pro | 1 | price rise on | $0.435/$0.87 → $1.32/$3.96/Mtok |
| Gemini 3.1 Flash-Lite | 1 | price cut on | $0.45/$2.7 → $0.25/$1.5/Mtok |
Both models have re-priced since we began tracking — pricing here is active, so re-check before committing to a long-term choice.
See all recent price moves →
MODELPRICEWATCH.COM · 2026-09-12
Try Gemini 3.1 Flash-Lite on Google
The cheaper option here — Gemini 3.1 Flash-Lite costs $0.563/Mtok blended on Google.
Summary
DeepSeek V4 Pro by DeepSeek costs $1.32/Mtok input and $3.96/Mtok output, with a 1M-token context window. It supports text input and is available from 4 providers.
Gemini 3.1 Flash-Lite by Google costs $0.250/Mtok input and $1.50/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
On a blended cost basis, Gemini 3.1 Flash-Lite is 71.6% cheaper than DeepSeek V4 Pro.
The two aren't directly comparable on average benchmark score: DeepSeek V4 Pro has published per-benchmark results, while Gemini 3.1 Flash-Lite does not yet — it is measured today on independent composites (see the table above).
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.
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