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Gemini 2.5 Flash

VS
xAI

Grok 4.3

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Grok 4.3 is the premium intelligence choice, scoring 0.0% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: Gemini 2.5 Flash is 1.8x cheaper to run and delivers 1.1x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Gemini 2.5 Flash offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Grok 4.3 fully justifies the cost.

Model Specs

Gemini 2.5 Flash

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
68.3%

Cost & Performance

Cost (per 1M tokens)1.8x cheaper
$0.85Input: $0.30 | Output: $2.50
Speed1.1x faster
221 tps
Context Window
1M tokens
Model Specs

Grok 4.3

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+21.8%)
90.1%

Cost & Performance

Cost (per 1M tokens)
$1.56Input: $1.25 | Output: $2.50
Speed
209 tps
Context Window
1M tokens
Read our data collection methodology

Frequently Asked Questions

Gemini 2.5 Flash is cheaper than Grok 4.3. Gemini 2.5 Flash has a blended cost of $0.85/1M tokens, which is about 1.8x cheaper than Grok 4.3 at $1.56/1M tokens.

Gemini 2.5 Flash is faster than Grok 4.3. Gemini 2.5 Flash generates 221 tokens per second (tps) compared to Grok 4.3 which generates 209 tokens per second.

Coding benchmark scores are not currently recorded for these models.

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