Claude 4 Opus vs Gemini 3.1 Pro — Pricing Comparison 2026

Requests per Day

Days per Month

Anthropic

Claude 4 Opus (Retired)

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

Google

Gemini 3.1 Pro

$0.00

per month

Input cost

Output cost

Cost per request

Requests/month

Which Model for Which Use Case?

Best Value Migration

Gemini 3.1 Pro is 87% cheaper on input and 84% cheaper on output than Claude 4 Opus — with 5x more context (1M vs 200K). For most Claude 4 Opus workloads, this is the clear winner on price-to-performance.

Best value: Gemini 3.1 Pro (87% cheaper)

Long Document Analysis

Gemini 3.1 Pro's 1M context window handles entire codebases, books, or long conversations that would exceed Claude 4 Opus's 200K limit. At 87% less cost, it's the obvious choice for context-heavy workloads.

Large context: Gemini 3.1 Pro (1M tokens)

After June 15 Migration

When Claude 4 Opus deprecates, Gemini 3.1 Pro ($2/$12) offers the best value with 1M context. For Anthropic ecosystem users, Claude Opus 4.8 ($5/$25) is the direct successor at 67% savings.

Best value: Gemini 3.1 Pro ($2/$12) | Anthropic: Opus 4.8 ($5/$25)

Maximum Savings

For the deepest savings, Llama 4 Maverick ($0.27/$0.85) is 98% cheaper than Claude 4 Opus with 1M context. DeepSeek V4 Pro ($0.44/$0.87) is 97% cheaper. Both are open source and self-hostable.

Budget 1M: Llama 4 Maverick (98% cheaper) | Budget: DeepSeek V4 Pro (97% cheaper)

Need deeper cost analysis?

APIpulse lets you compare all 88 models, save scenarios, and export PDF reports.

88 models across 10 providers

Save up to 10 scenarios

Export PDF cost reports

Optimize — save up to 40%

Free Tools →

Frequently Asked Questions

Is Gemini 3.1 Pro cheaper than Claude 4 Opus?

Yes, dramatically. Claude 4 Opus costs $15.00/M input and $75.00/M output. Gemini 3.1 Pro costs $2.00/M input and $12.00/M output. Gemini 3.1 Pro is 87% cheaper on input and 84% cheaper on output. For a typical workload of 1M input + 500K output tokens/month, Gemini 3.1 Pro costs $8.00 vs Claude 4 Opus's $52.50 — saving you $44.50/month (85%).

How does Gemini 3.1 Pro quality compare to Claude 4 Opus?

Claude 4 Opus was Anthropic's flagship model with excellent reasoning and coding capabilities, but it was retired on June 15, 2026. Gemini 3.1 Pro from Google is a direct competitor with a 1M token context window — 5x larger than Claude 4 Opus's 200K. Gemini 3.1 Pro excels at complex reasoning, code generation, multimodal tasks, and long-document analysis. For Opus-level quality at a fraction of the cost, Gemini 3.1 Pro is the strongest value alternative.

What happened when Claude 4 Opus was retired on June 15?

Since June 15, 2026, Claude 4 Opus API calls return 410 Gone errors. You must migrate to a replacement model. Options: (1) Gemini 3.1 Pro ($2/$12) — 87% cheaper, 1M context, Google's latest. (2) Claude Opus 4.8 ($5/$25) — direct Anthropic successor, 67% cheaper with 1M context. (3) GPT-5 ($1.25/$10) — 92% cheaper, 272K context. (4) Llama 4 Maverick ($0.27/$0.85) — 98% cheaper, open source, 1M context.

What is the cheapest alternative to Claude 4 Opus with 1M context?

For 1M context at the lowest cost, Llama 4 Maverick ($0.27/$0.85) is 98% cheaper than Claude 4 Opus. DeepSeek V4 Pro ($0.44/$0.87) is 97% cheaper. Gemini 3.1 Pro ($2/$12) is 87% cheaper with Google's ecosystem and 1M context. Claude Opus 4.8 ($5/$25) is 67% cheaper and is the direct Anthropic successor.