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Claude Opus 4.8 vs Gemini 3 Flash Preview

List-price comparison · Claude Opus 4.8 details · Gemini 3 Flash Preview details

For a typical workload (100,000 requests / mo), Gemini 3 Flash Preview costs 89% less $180.00/mo vs $1,600.00/mo.

 Claude Opus 4.8Gemini 3 Flash Preview
Input / 1M tokens$5.00$0.500
Output / 1M tokens$25.00$3.00
Typical request (1,200 in + 400 out)$0.016$0.0018
Context window1M tokens1,048,576 tokens
Max output128k tokens65,536 tokens
TierFlagshipBalanced
ProviderAnthropicGoogle

Projected monthly cost

Rows open both models in the calculator — adjust volume and token counts there.

Claude Opus 4.8

Best-in-class for complex multi-step agentic workflows, long-horizon planning, and large codebase refactors. Strong instruction-following on ambiguous, open-ended tasks.

Highest per-token cost in the catalog and noticeably higher latency — reserve for tasks that genuinely need top-tier reasoning rather than routine completions.

Gemini 3 Flash Preview

Auto-synced from OpenRouter — no editorial write-up yet.

More comparisons

Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.