vs
0:6
overall capability wins (1 ties across 7 scored). Gemini 3.8 Flash leads overall.
- Reasoning0:2
- Coding0:2
- Arena0:1
- Composite indices0:2
- Pricing0:3
- Specs0:1
Verdict
Gemini 3.8 Flash leads coding (widest gap: +120.0 on WebDev Elo); Gemini 3.8 Flash ranks higher on LMArena (+6 Elo); Gemini 3.8 Flash offers larger context (1.0M vs 1M).
- Gemini 3.8 Flash leads coding (widest gap: +120.0 on WebDev Elo)
- Gemini 3.8 Flash ranks higher on LMArena (+6 Elo)
- Gemini 3.8 Flash offers larger context (1.0M vs 1M)
- Gemini 3.8 Flash is ~3.0x cheaper on a blended token basis than Gemini 3.1 Pro
Cost for 1M in + 250K out
Illustrative chat workload at primary-provider list prices.
- Gemini 3.1 Pro
- $5
- Gemini 3.8 Flash
- $1.69
Gemini 3.8 Flash is about 3.0x cheaper on this workload.
Price per 1M tokens
Full comparison
Organization
Family
Gemini
Gemini
License
Proprietary
Proprietary
Open weights
No
No
Release
Feb 19, 2026
Sep 2, 2026
Knowledge cutoff
-
2026-03
API / provider
Modalities
text, image, audio, video → text
text, image, audio, video → text
Specs
Context window
1M
1.0M
Max output
66K
66K
Parameters
—
—
Pricing
Input $/1M
$2
$0.75
Output $/1M
$12
$3.75
Blended $/1M (3∶1)
$4.50
$1.50
Speed
tok/s
128
-
TTFT (s)
0.4
-
Reasoning
MMLU-Pro
—
—
GPQA Diamond
94.3
95.3
Humanity's Last Exam
44.4
47.8
AIME 2025
—
—
MATH-500
—
—
Humanity's Last Exam (with tools)
—
—
AA-Omniscience Accuracy
—
54.6
AA-LCR v1.1
—
81.3
CritPt
—
18.3
MMMU-Pro
—
85.6
IFBench
—
—
Chartography
—
—
Chartography (With Tools)
—
—
Coding
SWE-bench Verified
80.6
—
SWE-bench Pro
54.2
—
SWE-bench Multilingual
—
—
LiveCodeBench
—
—
Terminal-Bench 2.1
70.7
87.6
Aider Polyglot
—
—
Terminal-Bench 3
—
—
BigCodeBench
—
—
SciCode
—
56.6
CursorBench
—
69.2
SWE-Rebench
54.9
—
NL2Repo-Bench
—
—
DeepSWE
—
73.7
WebDev Arena
1,447
1,567
Terminal-Bench 4.0
—
19.1
CursorBench 4.0
—
—
FrontierCode v1.1 (Main)
—
—
Arena
LMArena Elo
1,487
1,493
| Metric | Gemini 3.1 Pro | Gemini 3.8 Flash | Delta |
|---|---|---|---|
| Identity | |||
| Organization | — | ||
| Family | Gemini | Gemini | — |
| License | Proprietary | Proprietary | — |
| Open weights | No | No | — |
| Release | Feb 19, 2026 | Sep 2, 2026 | — |
| Knowledge cutoff | - | 2026-03 | — |
| API / provider | — | ||
| Modalities | text, image, audio, video → text | text, image, audio, video → text | — |
| Specs | |||
| Context window | 1M | 1.0M | B +49K |
| Max output | 66K | 66K | tie |
| Parameters | — | — | — |
| Pricing | |||
| Input $/1M | $2 | $0.75 | B +$1.25 |
| Output $/1M | $12 | $3.75 | B +$8.25 |
| Blended $/1M (3∶1) | $4.50 | $1.50 | B +$3 |
| Speed | |||
| tok/s | 128 | - | — |
| TTFT (s) | 0.4 | - | — |
| Reasoning | |||
| MMLU-Pro | — | — | — |
| GPQA Diamond | 94.3 | 95.3 | B +1.0 pts |
| Humanity's Last Exam | 44.4 | 47.8 | B +3.4 pts |
| AIME 2025 | — | — | — |
| MATH-500 | — | — | — |
| Humanity's Last Exam (with tools) | — | — | — |
| AA-Omniscience Accuracy | — | 54.6 | — |
| AA-LCR v1.1 | — | 81.3 | — |
| CritPt | — | 18.3 | — |
| MMMU-Pro | — | 85.6 | — |
| IFBench | — | — | — |
| Chartography | — | — | — |
| Chartography (With Tools) | — | — | — |
| Coding | |||
| SWE-bench Verified | 80.6 | — | — |
| SWE-bench Pro | 54.2 | — | — |
| SWE-bench Multilingual | — | — | — |
| LiveCodeBench | — | — | — |
| Terminal-Bench 2.1 | 70.7 | 87.6 | B +16.9 pts |
| Aider Polyglot | — | — | — |
| Terminal-Bench 3 | — | — | — |
| BigCodeBench | — | — | — |
| SciCode | — | 56.6 | — |
| CursorBench | — | 69.2 | — |
| SWE-Rebench | 54.9 | — | — |
| NL2Repo-Bench | — | — | — |
| DeepSWE | — | 73.7 | — |
| WebDev Arena | 1,447 | 1,567 | B +120 Elo |
| Terminal-Bench 4.0 | — | 19.1 | — |
| CursorBench 4.0 | — | — | — |
| FrontierCode v1.1 (Main) | — | — | — |
| Arena | |||
| LMArena Elo | 1,487 | 1,493 | B +6 Elo |
Gemini 3.1 Pro
- Context
- 1M / 66K out
- Parameters
- —
- Price
- $2 / $12
- Speed
- 128 tok/s · 0.4s TTFT
- Modalities
- text, image, audio, video → text
- License
- Proprietary
Google's current Pro flagship with native multimodality and standout GPQA / ARC-AGI accuracy.
Gemini 3.8 Flash
- Context
- 1.0M / 66K out
- Parameters
- —
- Price
- $0.75 / $3.75
- Speed
- —
- Modalities
- text, image, audio, video → text
- License
- Proprietary
Google's Sep 2, 2026 Flash update over 3.7 Flash - gains on long-horizon software engineering, agentic knowledge work, and computer use; introductory $0.75/$3.75 through Dec 31, 2026 (then $1.50/$7.50).
Benchmark charts
Winner bars are emphasized. Per-benchmark deltas sit above each chart.