Which is cheaper, Claude Opus 4.8 or Gemini 3 Pro?

Claude Opus 4.8 costs $5/$25 per million input/output tokens, while Gemini 3 Pro costs $2/$12. For a typical workload of 10M input and 1.5M output tokens per month, that's $87.50 versus $38.00.

Which model is better for coding, Claude Opus 4.8 or Gemini 3 Pro?

On SWE-bench Verified — the standard agentic-coding benchmark — Claude Opus 4.8 scores 88.6% versus 76.2% for Gemini 3 Pro, making Claude Opus 4.8 the stronger pick for coding agents.

Claude Opus 4.8 vs Gemini 3 Pro

Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.

Claude Opus 4.8

Anthropic · May 2026

Anthropic's flagship Opus with adaptive thinking, effort controls and a 1M context — 88.6% on SWE-bench Verified at $5/$25.

Gemini 3 Pro

Google · Nov 2025

73.6

Google's November 2025 frontier breakout — 91.9% GPQA Diamond and 37.5% HLE made it the reasoning leader of its generation.

The verdict

Claude Opus 4.8 wins 2 of the 3 benchmarks these models share, against 1 for Gemini 3 Pro. Gemini 3 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix).

Benchmark head-to-head 2–1

SWE-bench Verified

88.6%76.2%

Claude Opus 4.8Gemini 3 Pro

GPQA Diamond

~91%91.9%

Claude Opus 4.8Gemini 3 Pro

Terminal-Bench

~63%54.2%

Claude Opus 4.8Gemini 3 Pro

Specs & pricing

	Claude Opus 4.8	Gemini 3 Pro
modhub Index	—	73.6
Input price / 1M	$5	$2
Output price / 1M	$25	$12
Context window	1M	1M
Max output	64K	66K
Open weights	no	no
Reasoning model	yes	yes
Multimodal input	text, image	text, image, audio, video
Knowledge cutoff	Mar 2026	Jan 2025
Released	May 2026	Nov 2025
Example monthly cost*	$87.50	$38.00

* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.

Frequently asked questions

Which is better, Claude Opus 4.8 or Gemini 3 Pro?: Claude Opus 4.8 wins 2 of the 3 benchmarks these models share, against 1 for Gemini 3 Pro. Gemini 3 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix).
Which is cheaper, Claude Opus 4.8 or Gemini 3 Pro?: Claude Opus 4.8 costs $5/$25 per million input/output tokens, while Gemini 3 Pro costs $2/$12. For a typical workload of 10M input and 1.5M output tokens per month, that's $87.50 versus $38.00.
Which model is better for coding, Claude Opus 4.8 or Gemini 3 Pro?: On SWE-bench Verified — the standard agentic-coding benchmark — Claude Opus 4.8 scores 88.6% versus 76.2% for Gemini 3 Pro, making Claude Opus 4.8 the stronger pick for coding agents.

More comparisons

Claude Opus 4.8 vs GPT-5.5 Gemini 3 Pro vs GPT-5.5 Claude Opus 4.8 vs GPT-5.2 Gemini 3 Pro vs GPT-5.2 Claude Opus 4.8 vs GPT-5.1 Gemini 3 Pro vs GPT-5.1 Claude Opus 4.8 vs GPT-5 Gemini 3 Pro vs GPT-5 Claude Opus 4.8 vs GPT-5 mini Gemini 3 Pro vs GPT-5 mini Claude Opus 4.8 vs OpenAI o3 Gemini 3 Pro vs OpenAI o3