DeepSeek V4.1 Flash 1017 vs Grok 4.3.
Verdict by category, tale of the tape, shared benchmarks only, and cost at three workloads — all from the tracked data.
Verdict by category
| Category | DeepSeek V4.1 Flash 1017 | Grok 4.3 | Winner |
|---|---|---|---|
| League Score | 72.8 | 73.7 | Grok 4.3 |
| Coding (SWE-bench %) | — | — | — |
| Reasoning (GPQA %) | — | 90.1 | — |
| Context (tokens) | 1000000 | 1000000 | Draw |
| Speed (tok/s) | — | 151.8 | — |
| Price (blended $/1M) | $0.52 | $1.56 | DeepSeek V4.1 Flash 1017 (cheaper) |
Tale of the tape
| Spec | DeepSeek V4.1 Flash 1017 | Grok 4.3 |
|---|---|---|
| Maker | DeepSeek | xAI (SpaceXAI) |
| Released | Oct 17, 2026 | Apr 30, 2026 |
| League Score | 73 | 74 |
| Context | 1,000,000 tokens | 1,000,000 tokens |
| Max output | 384,000 | — |
| $/1M input | $0.30 | $1.25 |
| $/1M output | $1.20 | $2.50 |
| Weights | Open | Closed |
| Speed | — | 151.8 t/s |
Head-to-head benchmarks (shared only)
| Benchmark | DeepSeek V4.1 Flash 1017 | Grok 4.3 |
|---|---|---|
| No shared benchmark measurements yet — shown as not measured, never interpolated. | ||
Cost at three workloads
| Workload | DeepSeek V4.1 Flash 1017 | Grok 4.3 |
|---|---|---|
| Light — 1M in / 250K out | $0.60 | $1.88 |
| Standard — 10M in / 2.5M out | $6.00 | $18.75 |
| Long-context — 50M in / 5M out | $21.00 | $75.00 |
The pick
Pick DeepSeek V4.1 Flash 1017 if you want the lower running cost; you want downloadable weights / self-hosting.
Pick Grok 4.3 if you want the higher overall League Score.
All figures from the model database — sources and dates on each model page. Cost your own workload or compare a different pair.
Frequently asked questions
Which is better overall, DeepSeek V4.1 Flash 1017 or Grok 4.3?
On overall League Score they are effectively tied — DeepSeek V4.1 Flash 1017 scores 73 and Grok 4.3 scores 74. The category verdicts on this page are where the real differences live.
Which is cheaper, DeepSeek V4.1 Flash 1017 or Grok 4.3?
DeepSeek V4.1 Flash 1017 is cheaper: $0.52 vs $1.56 blended per 1M tokens (3:1 input/output mix) — about 3.0x less per token.
Which has the bigger context window, DeepSeek V4.1 Flash 1017 or Grok 4.3?
Neither — both take 1M of context.
Are DeepSeek V4.1 Flash 1017 and Grok 4.3 open source?
DeepSeek V4.1 Flash 1017 is open weights — it can be downloaded and self-hosted; Grok 4.3 is closed weights — API access only.