vs
0:15
overall capability wins (2 ties across 17 scored). DeepSeek V4 Flash 0731 leads overall.
- Reasoning0:5
- Coding0:4
- Agents0:3
- Tool use0:2
- Composite indices0:2
- Pricing3:0
- Specs0:1
Verdict
DeepSeek V4 Flash 0731 leads coding (widest gap: +47.1 on DeepSWE); DeepSeek V4 Flash is ~3.8x cheaper on a blended token basis than DeepSeek V4 Flash 0731.
- DeepSeek V4 Flash 0731 leads coding (widest gap: +47.1 on DeepSWE)
- DeepSeek V4 Flash is ~3.8x cheaper on a blended token basis than DeepSeek V4 Flash 0731
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- DeepSeek V4 Flash
- $0.21
- DeepSeek V4 Flash 0731
- $0.77
DeepSeek V4 Flash is about 3.7x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
DeepSeek
DeepSeek
Family
DeepSeek
DeepSeek
License
MIT
MIT
Open weights
Yes
Yes
Release
Apr 24, 2026
Jul 31, 2026
Knowledge cutoff
-
-
API / provider
DeepSeek
DeepSeek
Modalities
text → text
text → text
Specs
Context window
1M
1M
Max output
384K
384K
Parameters
284B (13B act.)
304B
Pricing
Input $/1M
$0.14
$0.44
Output $/1M
$0.28
$1.32
Blended $/1M (3∶1)
$0.18
$0.66
Speed
tok/s
120
-
TTFT (s)
0.25
-
Reasoning
MMLU-Pro
—
—
GPQA Diamond
89.4
90.8
Humanity's Last Exam
34.8
38.6
AIME 2025
—
—
MATH-500
—
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
36.8
40.4
AA-LCR v1.1
74.3
79.7
CritPt
7.1
16.6
MMMU-Pro
—
—
IFBench
79.2
—
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
—
—
SWE-bench Pro
—
—
SWE-bench Multilingual
—
—
LiveCodeBench
—
—
Terminal-Bench 2.1
61.8
78.7
Aider Polyglot
—
—
Terminal-Bench 3
—
—
BigCodeBench
—
—
SciCode
45.3
50.3
CursorBench
—
—
SWE-Rebench
38.4
—
NL2Repo-Bench
39.4
54.2
DeepSWE
7.3
54.4
WebDev Arena
1,580
—
Terminal-Bench 4.0
—
—
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
1,436
—
| Metric | DeepSeek V4 Flash | DeepSeek V4 Flash 0731 | Delta |
|---|---|---|---|
| Identity | |||
| Organization | DeepSeek | DeepSeek | — |
| Family | DeepSeek | DeepSeek | — |
| License | MIT | MIT | — |
| Open weights | Yes | Yes | — |
| Release | Apr 24, 2026 | Jul 31, 2026 | — |
| Knowledge cutoff | - | - | — |
| API / provider | DeepSeek | DeepSeek | — |
| Modalities | text → text | text → text | — |
| Specs | |||
| Context window | 1M | 1M | tie |
| Max output | 384K | 384K | tie |
| Parameters | 284B (13B act.) | 304B | B +20 |
| Pricing | |||
| Input $/1M | $0.14 | $0.44 | A +$0.30 |
| Output $/1M | $0.28 | $1.32 | A +$1.04 |
| Blended $/1M (3∶1) | $0.18 | $0.66 | A +$0.48 |
| Speed | |||
| tok/s | 120 | - | — |
| TTFT (s) | 0.25 | - | — |
| Reasoning | |||
| MMLU-Pro | — | — | — |
| GPQA Diamond | 89.4 | 90.8 | B +1.4 pts |
| Humanity's Last Exam | 34.8 | 38.6 | B +3.8 pts |
| AIME 2025 | — | — | — |
| MATH-500 | — | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | 36.8 | 40.4 | B +3.6 pts |
| AA-LCR v1.1 | 74.3 | 79.7 | B +5.4 pts |
| CritPt | 7.1 | 16.6 | B +9.5 pts |
| MMMU-Pro | — | — | — |
| IFBench | 79.2 | — | — |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | — | — | — |
| SWE-bench Pro | — | — | — |
| SWE-bench Multilingual | — | — | — |
| LiveCodeBench | — | — | — |
| Terminal-Bench 2.1 | 61.8 | 78.7 | B +16.9 pts |
| Aider Polyglot | — | — | — |
| Terminal-Bench 3 | — | — | — |
| BigCodeBench | — | — | — |
| SciCode | 45.3 | 50.3 | B +5.0 pts |
| CursorBench | — | — | — |
| SWE-Rebench | 38.4 | — | — |
| NL2Repo-Bench | 39.4 | 54.2 | B +14.8 pts |
| DeepSWE | 7.3 | 54.4 | B +47.1 pts |
| WebDev Arena | 1,580 | — | — |
| Terminal-Bench 4.0 | — | — | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | 1,436 | — | — |
DeepSeek V4 Flash
- Context
- 1M / 384K out
- Parameters
- 284B (13B act.)
- Price
- $0.14 / $0.28
- Speed
- 120 tok/s · 0.25s TTFT
- Modalities
- text → text
- License
- MIT
Budget DeepSeek V4 API tier (Apr 2026 preview). Superseded by DeepSeek-V4-Flash-0731 (public beta), which re-post-trains the same architecture and reports far stronger agent benchmarks.
DeepSeek V4 Flash 0731
- Context
- 1M / 384K out
- Parameters
- 304B
- Price
- $0.44 / $1.32 peak · $0.22 / $0.66 off-peak
- Speed
- —
- Modalities
- text → text
- License
- MIT
Official DeepSeek-V4-Flash release (Jul 31, 2026 public beta) superseding the preview - same base architecture plus a DSpark speculative-decoding module (304B total), MIT weights on Hugging Face, and agent benchmarks well above V4-Pro-Preview (Terminal-Bench 2.1 82.7, NL2Repo 54.2). Peak/off-peak API pricing took effect Aug 16, 2026: $0.44 in / $1.32 out peak, $0.22 in / $0.66 out off-peak (per 1M tokens).
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.