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claude-opus-5 vs gemini-3.1-pro-preview

Output tokens cost $25.00 per million on claude-opus-5 and $12.00 per million on gemini-3.1-pro-preview. Input tokens cost $5.00 per million on claude-opus-5 and $2.00 per million on gemini-3.1-pro-preview. Cached input tokens are billed at $0.50 per million on claude-opus-5 and $0.50 per million on gemini-3.1-pro-preview. Context windows are 1,000,000 tokens on claude-opus-5 and 1,000,000 tokens on gemini-3.1-pro-preview. First-token latency measured on AIHubMix is 1.4s on claude-opus-5 and 5.9s on gemini-3.1-pro-preview. Measured output throughput is 56.7 tokens/s on claude-opus-5 and 79.5 tokens/s on gemini-3.1-pro-preview. On the LMArena coding leaderboard claude-opus-5 scores 1532 and gemini-3.1-pro-preview scores 1521.

Anthropicclaude-opus-5Googlegemini-3.1-pro-preview
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Anthropic
claude-opus-5
Anthropic · text, image → text

Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis of charts and documents, complex office deliverables, and coordinating parallel subagents. The model maintains strong instruction following and tool use across extended tasks, while remaining effective at lower effort settings for workloads that prioritize latency and token efficiency.

Input$5.00 /M
Output$25.00 /M
Details
Google
gemini-3.1-pro-preview
Google · text, image, audio, video → text

Gemini 3.1 Pro Preview is designed to further optimize the performance and reliability of the Gemini 3 Pro series, offering improved reasoning capabilities, greater token efficiency, and a more robust, factually consistent user experience. It is optimized for software-engineering behaviors and usability, and is also suitable for agent workflows that require precise tool invocation and reliable multi-step execution, enabling stable operation across a variety of real-world scenarios.

Input$2.00 /M
Output$12.00 /M
Details

Specs & Pricing

Prices are per million tokens. Latency and throughput are rolling averages measured on AIHubMix.

claude-opus-5
gemini-3.1-pro-preview
Input price
$5.00
$2.00
Output price
$25.00
$12.00
Cache read
$0.50
$0.50
Context window
1,000,000
1,000,000
Max output
128,000
64,000
Latency (first token)
1.4 s
5.9 s
Throughput
56.7 TPS
79.5 TPS
Modalities
textimage
textimageaudiovideo
Features
thinkingtoolsstructured outputslong contextweb
thinkingtoolsfunction callingstructured outputswebdeepsearchlong context
Endpoints
chat_completions · claude_api · responses
chat_completions · gemini_api · claude_api

Promotional prices show the discounted rate; see each model page for promotion windows.

Usage on AIHubMix last 30 days

Daily traffic served through AIHubMix — how demand for each model is trending.

claude-opus-5gemini-3.1-pro-preview

Tokens / day

-

Requests / day

-

Live Performance last 3 days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

claude-opus-5gemini-3.1-pro-preview

Throughput (TPS)

-

Latency (s)

-

Uptime (%)

-

Arena Scores

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
claude-opus-5gemini-3.1-pro-preview
1440150015601620
Overall
14851492
Coding
15211532
Math
14921537
Hard prompts
15071520
Instruction following
14811498
Multi-turn
14861492
Creative writing
14721479
Longer query
14981506
Chinese
15301590
English
14891493
Vision
claude-opus-5gemini-3.1-pro-preview
126013001340
Overall
12781295
OCR
12951305
Diagram
13091323
Homework
13101341
WebDev Arena
claude-opus-5gemini-3.1-pro-preview
13801480158016801780
Overall
14471669
React
14361688
HTML
14981668
Gaming
14671750
Simulations
14711725
Data analytics
14051597

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost Calculator

Estimate your monthly bill for the same workload on each model.

gemini-3.1-pro-preview
$300 /mo
claude-opus-5
$675 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: claude-opus-5, gemini-3.1-pro-preview?

gemini-3.1-pro-preview: $12.00/M output tokens; claude-opus-5: $25.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

claude-opus-5: 1532; gemini-3.1-pro-preview: 1521 (LMArena coding leaderboard).

Which responds faster?

claude-opus-5: 1.4s first-token latency measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

claude-opus-5 accepts 1,000,000 and gemini-3.1-pro-preview accepts 1,000,000 input tokens. Maximum output per request is 128,000 tokens on claude-opus-5 and 64,000 tokens on gemini-3.1-pro-preview.

Which one generates tokens faster?

gemini-3.1-pro-preview at 79.5 tokens/s and claude-opus-5 at 56.7 tokens/s, measured as output throughput on AIHubMix — a separate metric from first-token latency.

What inputs and capabilities does each model support?

claude-opus-5 accepts text and image input and supports thinking, tool calling, structured outputs, long context and web search; gemini-3.1-pro-preview accepts text, image, audio and video input and supports thinking, tool calling, function calling, structured outputs, web search, deep search and long context.

Can I call claude-opus-5 and gemini-3.1-pro-preview with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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