How do Gemini 3.8 Flash and Claude Opus 4.8 compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both Gemini 3.8 Flash and Claude Opus 4.8 when publicly disclosed.

LLM Comparison

Gemini 3.8 Flash vs Claude Opus 4.8: benchmark scores, pricing & comparison.

Q: Which is better: Gemini 3.8 Flash or Claude Opus 4.8?

AskClash compares Gemini 3.8 Flash and Claude Opus 4.8 side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, AskClash ACB, and context window so you can see which model wins on each benchmark.

Side-by-side Gemini 3.8 Flash vs Claude Opus 4.8 comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.

Open live leaderboard Gemini 3.8 Flash model page Claude Opus 4.8 model page

Rank #8 vs #10AskClash overall scores 71.1 vs 69.0.

Pricing $1.50/$7.50 vs $5.00/$25.0Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryGoogle vs Anthropic.

Gemini 3.8 Flash vs Claude Opus 4.8 benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

Metric	Gemini 3.8 Flash	Claude Opus 4.8
Overall Score	71.1	69.0
Leaderboard Rank	#8	#10
ACB	—	60.1
RWT	—	9.0
Coding Agent Index	—	72.5
HLE	54.9	57.9
GPQA	94.5	93.6
IFEval	—	62.2
SWE-bench	—	88.6
SWE-Pro	—	69.2
SWE-Atlas	—	82.5
Terminal-Bench	89.4	74.6
DeepSWE	71.0	59.0
GDPval-AA	1545.0	1889.8
OSWorld	—	83.4
MCP Atlas	—	82.2
Finance Agent	61.4	53.9
CharXiv	86.2	89.9
MMMU-Pro	85.5	—
ARC-AGI 2	—	72.1
Tau2	—	94.4
MRCR	97.0	—
Input Price (per 1M tokens)	$1.50	$5.00
Output Price (per 1M tokens)	$7.50	$25.0
Context Window	1M	1M
Benchmarks Published	10	18

Gemini 3.8 Flash vs Claude Opus 4.8 head-to-head charts

Gemini 3.8 Flash leads 5 and Claude Opus 4.8 leads 3 of 8 shared benchmarks. Gemini 3.8 Flash is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Gemini 3.8 FlashClaude Opus 4.8

Overall

71.1Gemini 3.8 Flash

69.0Claude Opus 4.8

HLE

54.9Gemini 3.8 Flash

57.9Claude Opus 4.8

GPQA

94.5Gemini 3.8 Flash

93.6Claude Opus 4.8

Terminal-Bench

89.4Gemini 3.8 Flash

74.6Claude Opus 4.8

DeepSWE

71.0Gemini 3.8 Flash

59.0Claude Opus 4.8

GDPval-AA

1545.0Gemini 3.8 Flash

1889.8Claude Opus 4.8

Finance Agent

61.4Gemini 3.8 Flash

53.9Claude Opus 4.8

CharXiv

86.2Gemini 3.8 Flash

89.9Claude Opus 4.8

Gemini 3.8 Flash

Input$1.50

Output$7.50

Workload$3.00

Context1M

Claude Opus 4.8

Input$5.00

Output$25.0

Workload$10

Context1M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Gemini 3.8 Flash and Claude Opus 4.8 comparisons

Explore how Gemini 3.8 Flash and Claude Opus 4.8 stack up against other top-ranked LLMs.

Claude Fable 5.1 vs Gemini 3.8 Flash Claude Fable 5.1 vs Claude Opus 4.8 Claude Opus 5 vs Gemini 3.8 Flash Claude Opus 5 vs Claude Opus 4.8 Claude Fable 5 vs Gemini 3.8 Flash Claude Fable 5 vs Claude Opus 4.8 GLM-5.3 vs Gemini 3.8 Flash GLM-5.3 vs Claude Opus 4.8 Grok 4.6 vs Gemini 3.8 Flash Grok 4.6 vs Claude Opus 4.8

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

Token pricing

Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.

Coverage matters

Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.

This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.