Claude Opus 4.6 vs Gemini 3.1 Pro
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
Claude Opus 4.6
Anthropic · Jan 2026
The first Opus with a 1M-token context window at standard pricing, kicking off Anthropic's rapid 2026 release cadence.
Gemini 3.1 Pro
Google · Mar 2026
Google's flagship with the industry's largest context window — 2M tokens — and frontier multimodal reasoning at $2/$12.
The verdict
Claude Opus 4.6 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3.1 Pro. Gemini 3.1 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix). Gemini 3.1 Pro also takes 2M of context versus 1M for Claude Opus 4.6.
Benchmark head-to-head 1–0
Specs & pricing
| Claude Opus 4.6 | Gemini 3.1 Pro | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $5 | $2 |
| Output price / 1M | $25 | $12 |
| Context window | 1M | 2M |
| Max output | 64K | 66K |
| Open weights | no | no |
| Reasoning model | yes | yes |
| Multimodal input | text, image | text, image, audio, video |
| Knowledge cutoff | Aug 2025 | Nov 2025 |
| Released | Jan 2026 | Mar 2026 |
| 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 4.6 or Gemini 3.1 Pro?
- Claude Opus 4.6 wins 1 of the 1 benchmarks these models share, against 0 for Gemini 3.1 Pro. Gemini 3.1 Pro is about 2.2x cheaper per blended million tokens (3:1 input:output mix). Gemini 3.1 Pro also takes 2M of context versus 1M for Claude Opus 4.6.
- Which is cheaper, Claude Opus 4.6 or Gemini 3.1 Pro?
- Claude Opus 4.6 costs $5/$25 per million input/output tokens, while Gemini 3.1 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 4.6 or Gemini 3.1 Pro?
- On SWE-bench Verified — the standard agentic-coding benchmark — Claude Opus 4.6 scores ~81.4% versus ~78% for Gemini 3.1 Pro, making Claude Opus 4.6 the stronger pick for coding agents.
More comparisons
Claude Opus 4.6 vs GPT-5.5Gemini 3.1 Pro vs GPT-5.5Claude Opus 4.6 vs GPT-5.2Gemini 3.1 Pro vs GPT-5.2Claude Opus 4.6 vs GPT-5.1Gemini 3.1 Pro vs GPT-5.1Claude Opus 4.6 vs GPT-5Gemini 3.1 Pro vs GPT-5Claude Opus 4.6 vs GPT-5 miniGemini 3.1 Pro vs GPT-5 miniClaude Opus 4.6 vs OpenAI o3Gemini 3.1 Pro vs OpenAI o3