DeepSeek-V4.1-Flash
- Next shutdown
- None setNo date on 2 platforms
- Arena Text
- 1,475#24 of 128 · Arena
- GPQA Diamond
- 89.8%#39 of 108 · Epoch AI
- List price · $ per 1M
- $0.30 in $1.20 outTogether AI · cached input $0.006
- Context window
- 1Mtokens
Dates on every platform
2 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| Together AITogether AI: Changelog (opens in a new tab) · checked Oct 14, 2026 | deepseek-ai/DeepSeek-V4.1-FlashActive | – | None set | – |
| Fireworks AIFireworks AI: Serverless Pricing (opens in a new tab) · checked Oct 14, 2026 | accounts/fireworks/models/deepseek-v4p1-flashActive | – | None set | – |
What breaks when you move off DeepSeek-V4.1-Flash
Intelligence
Third-party results, credited below
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,475 ± 3 | #24 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 89.8% ± 1.7% | #39 of 108 | Oct 9, 2026 |
| Arena WebDev | Arena | 1,619 ± 6 | #13 of 69 | Oct 8, 2026 |
| Arena Agent | Arena | 0 ± 0 | #16 of 35 | Oct 12, 2026 |
| FrontierMath Tier 4 | Epoch AI | 26.8% ± 7.0% | #32 of 58 | Oct 8, 2026 |
| FrontierMath Tiers 1-3 | Epoch AI | 67.4% ± 2.8% | #26 of 71 | Oct 8, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 98.3% ± 0.6% | #18 of 105 | Oct 8, 2026 |
| SimpleQA Verified | Epoch AI | 42.9% ± 1.6% | #36 of 68 | Oct 13, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
Together AIdeepseek-ai/DeepSeek-V4.1-Flash | $0.30 | $0.006 | $1.20 | Sep 11, 2026Current | Together AI: Available models (serverless) (opens in a new tab) |
Fireworks AIaccounts/fireworks/models/deepseek-v4p1-flash | $0.30 | $0.006 | $1.20 | Oct 1, 2026Current · Standard serverless mode. Batch inference is billed at half the Standard rate; Priority, Fast and US-only endpoints cost more. | Fireworks AI: Changelog (opens in a new tab) |
Fireworks AIaccounts/fireworks/models/deepseek-v4p1-flash | $0.22 | $0.007 | $0.66 | Sep 14, 2026 to Oct 1, 2026Earlier price · Rate shown in a Fireworks blog post on 14 September 2026; replaced on 1 October 2026. Standard serverless mode. | Fireworks AI: Changelog (opens in a new tab) |
Change history
ShutdownDeepSeek V4 Flash 0731 leaves Together serverlessTogether AI1 break
Together removes deepseek-ai/DeepSeek-V4-Flash-0731 from serverless inference and recommends DeepSeek V4.1 Flash.
- Platform
- Together AI
- Model
- DeepSeek-V4-Flash
- Replacement
- DeepSeek-V4.1-Flash
- AvailabilityRequests to the removed serverless model ID fail. The model can still run on an on-demand dedicated endpoint, billed per minute.
Price changeDeepSeek V4.1 Flash serverless prices change on FireworksFireworks AI1 break
Standard and Priority serverless rates for DeepSeek V4.1 Flash changed: uncached input and output prices rose and the cached input price fell.
- Platform
- Fireworks AI
- Model
- DeepSeek-V4.1-Flash
- PricingServerless usage costs more per uncached input and output token. Dedicated deployments and Reserved Throughput are unaffected.
ReleaseDeepSeek V4.1 Flash arrives on Together serverlessTogether AI
deepseek-ai/DeepSeek-V4.1-Flash is available on serverless with a context length of one million tokens, function calling and structured outputs.
- Platform
- Together AI
- Model
- DeepSeek-V4.1-Flash
Source: Together AI, Changelog (opens in a new tab); Together AI, Available models (serverless) (opens in a new tab)