Neither wins outright: DeepSeek: DeepSeek V4 Flash Vision Exp is the pick when cost matters at scale, Google: Gemini 3.8 Flash (batch) when you need audio input.
| Spec | DeepSeek: DeepSeek V4 Flash Vision Exp | Google: Gemini 3.8 Flash (batch) |
|---|---|---|
| Provider | DeepSeek | |
| Input price (per 1M tokens) | $0.22 | $0.38 |
| Output price (per 1M tokens) | $0.65 | $1.88 |
| Blended price (3:1 input/output) | $0.32 | $0.75 |
| Cheaper than … of all models we track | 62% | 45% |
| Context window | 1.0M tokens (~1,573 pages) | 1.0M tokens (~1,573 pages) |
| Larger context than … of all models | 80% | 80% |
| Max output per response | 262K tokens (~196,600 words) | 66K tokens (~49,200 words) |
| Input types | text, image | text, image, video, file, audio |
| Output types | text | text |
| Free variant | No | No |
| Listed since | 2026-08-21 | 2026-09-02 |
Monthly cost at list price for five common workloads. Token counts per unit are stated so you can scale them to your own traffic. A workload that does not fit a model's context window is marked rather than priced.
| Workload (per month) | DeepSeek: DeepSeek V4 Flash Vision Exp | Google: Gemini 3.8 Flash (batch) | Difference |
|---|---|---|---|
| Customer-support chatbot 50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens) | $29.11 | $65.63 | DeepSeek: DeepSeek V4 Flash Vision Exp saves $36.52 |
| RAG search over documents 20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens) | $32.34 | $63.75 | DeepSeek: DeepSeek V4 Flash Vision Exp saves $31.41 |
| Coding / tool-using agent 2,000 tasks — each a multi-step task with tool calls and file context (60,000 in / 6,000 out tokens) | $33.63 | $67.50 | DeepSeek: DeepSeek V4 Flash Vision Exp saves $33.87 |
| Batch summarisation 10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens) | $21.13 | $41.25 | DeepSeek: DeepSeek V4 Flash Vision Exp saves $20.12 |
| Long-document analysis 500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens) | $11.43 | $20.63 | DeepSeek: DeepSeek V4 Flash Vision Exp saves $9.20 |
| Capability | DeepSeek: DeepSeek V4 Flash Vision Exp | Google: Gemini 3.8 Flash (batch) | What it lets you do |
|---|---|---|---|
| Tool / function calling | ✓ Yes | ✓ Yes | call your APIs and run agent loops |
| Structured output (JSON schema) | ✓ Yes | ✓ Yes | return JSON that validates against your schema |
| Reasoning / thinking mode | ✓ Yes | ✓ Yes | spend extra tokens thinking before answering hard problems |
| Image input | ✓ Yes | ✓ Yes | read screenshots, charts and scanned pages |
| Audio input | — | ✓ Yes | take speech or audio directly |
| File / PDF input | — | ✓ Yes | accept documents without your own parsing step |
| Image output | — | — | generate images, not just text |
| Built-in web search | — | ✓ Yes | answer from live web results |
| Seed (reproducible sampling) | ✓ Yes | ✓ Yes | repeat a generation for tests and evals |
| Log-probabilities | ✓ Yes | — | read token confidence for classification and scoring |
From each model's published parameters and input/output types. “—” means not advertised, not proven absent.
| Date | Model | Input / 1M | Output / 1M |
|---|---|---|---|
| 2026-09-29 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.65 |
| 2026-09-28 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.44 | $1.32 |
| 2026-09-27 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.65 |
| 2026-09-21 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.66 |
| 2026-09-18 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.65 |
| 2026-09-09 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.66 |
| 2026-09-07 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.44 | $1.32 |
| 2026-09-05 | DeepSeek: DeepSeek V4 Flash Vision Exp | $0.22 | $0.66 |
Neither wins outright: DeepSeek: DeepSeek V4 Flash Vision Exp is the pick when cost matters at scale, Google: Gemini 3.8 Flash (batch) when you need audio input. In short: DeepSeek: DeepSeek V4 Flash Vision Exp when cost matters at scale, you need log-probabilities, you generate long outputs in one go; Google: Gemini 3.8 Flash (batch) when you need audio input, you need file / PDF input, you need built-in web search.
DeepSeek: DeepSeek V4 Flash Vision Exp is cheaper: $0.32 vs $0.75 per 1M tokens at a typical 3:1 input/output mix, 57% less. For 50,000 support conversations a month that is $29.11 against $65.63.
DeepSeek: DeepSeek V4 Flash Vision Exp costs $0.22 per 1M input tokens and $0.65 per 1M output tokens; Google: Gemini 3.8 Flash (batch) costs $0.38 input and $1.88 output. Output tokens are billed separately, so long answers shift the gap.
Both take 1.0M tokens per request — roughly 1,573 pages of text.
Tool calling — DeepSeek: DeepSeek V4 Flash Vision Exp: yes, Google: Gemini 3.8 Flash (batch): yes. JSON-schema structured output — DeepSeek: DeepSeek V4 Flash Vision Exp: yes, Google: Gemini 3.8 Flash (batch): yes.
Yes, both accept image input.
No free variant is listed for either; both are pay-per-token.
DeepSeek: DeepSeek V4 Flash Vision Exp can write up to 262K tokens (about 196,600 words) per response; Google: Gemini 3.8 Flash (batch) up to 66K (about 49,200 words).
DeepSeek: DeepSeek V4 Flash Vision Exp was listed on 2026-08-21; Google: Gemini 3.8 Flash (batch) on 2026-09-02.
DeepSeek: DeepSeek V4 Flash Vision Exp: input price cut 51% ($0.44 → $0.22/1M), output price cut 51% ($1.32 → $0.65/1M) on 2026-09-29 (12 price changes since 2026-08-22). Google: Gemini 3.8 Flash (batch): price unchanged since we started tracking it on 2026-09-03.
DeepSeek V4 Flash Vision Exp is an experimental vision-enabled version of [DeepSeek V4 Flash 0731](https://openrouter.ai/deepseek/deepseek-v4-flash-0731) from DeepSeek, adding image understanding while matching the base model on text capabilities including agents,...
Full DeepSeek: DeepSeek V4 Flash Vision Exp specs →Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.
Full Google: Gemini 3.8 Flash (batch) specs →