DeepSeek V4.1 Flash 1017
- Family
- DeepSeek V4.1
- Released
- 2026-10-17
- Context
- 1M
- Max output
- 384K
- Parameters
- 552B
- Architecture
- Mixture of Experts
- Specialization
- general
- Openness
- Open source
- License
- MITOSI-approvedCommercial use: permitted
- Weights
- Available
- Code
- Unknown
- Training
- Pretrained
Cheapest of 4 routes · DeepInfra · cache read $0.006
About
DeepSeek V4.1 Flash 1017 is the October 17, 2026 update to DeepSeek V4.1 Flash, released under the MIT license with weights on Hugging Face and ModelScope. DeepSeek describes it as a minor update trained with reinforcement learning from self-feedback for end-to-end project development, with shorter task runtime and output length. It supports 1M-token context, up to 384K output tokens, vision input, thinking and non-thinking modes, tool calls and JSON output. The DeepSeek API serves it as deepseek-flash, and the legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp also route to it.
Providers(4)
Compare all 4Compare API pricing across 4 tracked provider routes for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Cache | Route |
|---|---|---|---|---|
| DeepInfra | $0.200 | $0.600 | read $0.006 | Serverless |
| DeepSeek Platform | $0.300 | $1.20 | read $0.006 | Serverless |
| OpenRouter | $0.300 | $1.20 | read $0.006 | Serverless |
| Vercel AI Gateway | $0.300 | $1.20 | read $0.006 | Serverless |
Available via routers & gateways(4)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Requesty
HybridAI gateway to 400+ LLM providers with intelligent routing, caching, guardrails, and governance; flat 5% markup on model costs with no subscription fee.
Respan
HybridUnified LLM engineering platform (gateway + observability + evals + prompt management) routing across 250+ models; previously Keywords AI, rebranded February 2026.
Capabilities
Benchmark peer barsfor RAG
No task-mapped benchmark peers are available for this model yet.
Benchmark scores(9)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| Humanity's Last Exam | 42.6 | HLE w/o tools; full set (text-only subset 44.0)Observed 2026-10-17 | — | Source |
| Terminal-Bench 4.0 | 42.3 | Terminal-Bench 4.0; Claude Code harnessObserved 2026-10-17 | — | Source |
| DeepSWE 1.1 | 77.0 | DeepSWE v1.1 Pass@1; mini-swe-v2 harness; max reasoning effortObserved 2026-10-17 | — | Source |
| ProgramBench Almost@1 | 29.1 | ProgramBench; same table column as V4.1 Flash 20.3 (Almost@1 per V4.1 tech report); 1017 card does not restate the metricObserved 2026-10-17 | — | Source |
| NL2Repo-Bench | 68.2 | NL2Repo-BenchObserved 2026-10-17 | — | Source |
| AutomationBench | 60.5 | Automation-Bench v1.0.6Observed 2026-10-17 | — | Source |
| Agents' Last Exam | 35.4 | Agents' Last ExamObserved 2026-10-17 | — | Source |
| Chartography w/ tools | 83.0 | Chartography w/ toolsObserved 2026-10-17 | — | Source |
| BabyVision w/ tools | 92.5 | BabyVision w/ toolsObserved 2026-10-17 | — | Source |
Migration checks
No linked migration route is available for this model yet.
Cheapest of 4 routes · DeepInfra · cache read $0.006