DeepSeek: DeepSeek V4.1 Flash comes out ahead on the data we track: 2 advantages and none for Particle AI: Particle-1.
| Spec | DeepSeek: DeepSeek V4.1 Flash | Particle AI: Particle-1 |
|---|---|---|
| Provider | DeepSeek | Particle Ai |
| Input price (per 1M tokens) | $0.04 | $0.25 |
| Output price (per 1M tokens) | $0.50 | $1.00 |
| Blended price (3:1 input/output) | $0.16 | $0.44 |
| Cheaper than … of all models we track | 73% | 56% |
| 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 | 944K tokens (~707,800 words) | 131K tokens (~98,300 words) |
| Input types | text, image | text, image |
| Output types | text | text |
| Free variant | No | No |
| Listed since | 2026-09-10 | 2026-10-28 |
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 V4.1 Flash | Particle AI: Particle-1 | Difference |
|---|---|---|---|
| Customer-support chatbot 50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens) | $13.38 | $38.75 | DeepSeek: DeepSeek V4.1 Flash saves $25.38 |
| RAG search over documents 20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens) | $10.40 | $40.00 | DeepSeek: DeepSeek V4.1 Flash saves $29.60 |
| 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) | $11.40 | $42.00 | DeepSeek: DeepSeek V4.1 Flash saves $30.60 |
| Batch summarisation 10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens) | $6.60 | $26.00 | DeepSeek: DeepSeek V4.1 Flash saves $19.40 |
| Long-document analysis 500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens) | $2.75 | $13.50 | DeepSeek: DeepSeek V4.1 Flash saves $10.75 |
| Capability | DeepSeek: DeepSeek V4.1 Flash | Particle AI: Particle-1 | 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 | — | — | take speech or audio directly |
| File / PDF input | — | — | accept documents without your own parsing step |
| Image output | — | — | generate images, not just text |
| Built-in web search | — | — | answer from live web results |
| Seed (reproducible sampling) | ✓ Yes | ✓ Yes | repeat a generation for tests and evals |
| Log-probabilities | ✓ Yes | ✓ 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 |
|---|---|---|---|
| 2026-10-29 | DeepSeek: DeepSeek V4.1 Flash | $0.04 | $0.50 |
| 2026-10-27 | DeepSeek: DeepSeek V4.1 Flash | $0.14 | $0.42 |
| 2026-10-24 | DeepSeek: DeepSeek V4.1 Flash | $0.02 | $1.00 |
| 2026-10-23 | DeepSeek: DeepSeek V4.1 Flash | $0.17 | $0.66 |
| 2026-10-22 | DeepSeek: DeepSeek V4.1 Flash | $0.30 | $1.20 |
| 2026-10-21 | DeepSeek: DeepSeek V4.1 Flash | $0.05 | $0.53 |
| 2026-10-20 | DeepSeek: DeepSeek V4.1 Flash | $0.04 | $0.01 |
| 2026-10-19 | DeepSeek: DeepSeek V4.1 Flash | $0.05 | $0.12 |
No advantage on the data we track — pick it for provider preference or output quality on your own prompts.
DeepSeek: DeepSeek V4.1 Flash comes out ahead on the data we track: 2 advantages and none for Particle AI: Particle-1.
DeepSeek: DeepSeek V4.1 Flash is cheaper: $0.16 vs $0.44 per 1M tokens at a typical 3:1 input/output mix, 64% less. For 50,000 support conversations a month that is $13.38 against $38.75.
DeepSeek: DeepSeek V4.1 Flash costs $0.04 per 1M input tokens and $0.50 per 1M output tokens; Particle AI: Particle-1 costs $0.25 input and $1.00 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 V4.1 Flash: yes, Particle AI: Particle-1: yes. JSON-schema structured output — DeepSeek: DeepSeek V4.1 Flash: yes, Particle AI: Particle-1: yes.
Yes, both accept image input.
No free variant is listed for either; both are pay-per-token.
DeepSeek: DeepSeek V4.1 Flash can write up to 944K tokens (about 707,800 words) per response; Particle AI: Particle-1 up to 131K (about 98,300 words).
DeepSeek: DeepSeek V4.1 Flash was listed on 2026-09-10; Particle AI: Particle-1 on 2026-10-28.
DeepSeek: DeepSeek V4.1 Flash: input price cut 68% ($0.14 → $0.04/1M), output price raised 16% ($0.42 → $0.50/1M) on 2026-10-29 (29 price changes since 2026-09-11). Particle AI: Particle-1: price unchanged since we started tracking it on 2026-10-29.
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