Compare/Gemini 2.5 Pro vs Claude Sonnet 5 (Adaptive Reasoning, Max Effort)

Gemini 2.5 ProvsClaude Sonnet 5 (Adaptive Reasoning, Max Effort)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

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Gemini 2.5 Pro

Input
$1.25/M
Output
$10/M
Speed
141 tok/s
TTFT
19.67s
Anthropic

Claude Sonnet 5 (Adaptive Reasoning, Max Effort)

Input
$2/M
Output
$10/M
Speed
87 tok/s
TTFT
134.45s

Winner by Category

Cheaper
Gemini 2.5 Pro
Faster (tok/s)
Gemini 2.5 Pro
Lower Latency
Gemini 2.5 Pro
Benchmarks (7-5)
Gemini 2.5 Pro

Pricing Comparison

MetricGemini 2.5 ProClaude Sonnet 5 (Adaptive Reasoning, Max Effort)
Input ($/M tokens)$1.25$2
Output ($/M tokens)$10$10
Cost for 1M input + 100K output tokens:
Gemini 2.5 Pro$2.25
Claude Sonnet 5 (Adaptive Reasoning, Max Effort)$3.00

Speed Comparison

Output Speed (tokens/s) — higher is better
Gemini 2.5 Pro
141 tok/s
Claude Sonnet 5 (Adaptive Reasoning, Max Effort)
87 tok/s
Time to First Token (seconds) — lower is better
Gemini 2.5 Pro
19.67s
Claude Sonnet 5 (Adaptive Reasoning, Max Effort)
134.45s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
25.853.4
Coding Index
33.371.5
Math Index
87.7
GPQA Diamond
84.4%91.1%
MMLU-Pro
86.2%
LiveCodeBench
80.1%
AIME 2025
87.7%
MATH-500
96.7%
Humanity's Last Exam
21.1%39.6%
SciCode
42.8%53.6%
IFBench
48.7%
TerminalBench
26.5%
Gemini 2.5 Pro7 wins
5 winsClaude Sonnet 5 (Adaptive Reasoning, Max Effort)

Frequently Asked Questions

Which is cheaper, Gemini 2.5 Pro or Claude Sonnet 5 (Adaptive Reasoning, Max Effort)?

Gemini 2.5 Pro is cheaper overall. Its blended price (3:1 input/output ratio) is $3.44/M tokens vs $4.00/M for Claude Sonnet 5 (Adaptive Reasoning, Max Effort).

Which model performs better on benchmarks?

Gemini 2.5 Pro wins 7 out of 12 benchmarks compared to 5 for Claude Sonnet 5 (Adaptive Reasoning, Max Effort). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Gemini 2.5 Pro generates tokens faster at 141 tok/s vs 87 tok/s. Gemini 2.5 Pro also has lower time-to-first-token (19.67s vs 134.45s).

When should I use Gemini 2.5 Pro vs Claude Sonnet 5 (Adaptive Reasoning, Max Effort)?

Choose based on your priorities: Gemini 2.5 Pro for lower cost, Gemini 2.5 Pro for stronger benchmark performance, and Gemini 2.5 Pro for faster generation. For latency-sensitive apps, check the TTFT comparison above.