Claude Opus 5 vs Gemini 3.7 Flash: Specs & Benchmark Comparison
Claude Opus 5 is developed by Anthropic, while Gemini 3.7 Flash comes from Google. Claude Opus 5 was released in July 2026, and Gemini 3.7 Flash followed a month later in August 2026.
The two models share 5 published benchmarks. Claude Opus 5 leads on 4 of them, Gemini 3.7 Flash on 1. The widest gaps are on BioMysteryBench, where Claude Opus 5 scores 90.1% against 43.5%; OSWorld 2.0, where Claude Opus 5 scores 70.6% against 47.9%. Averaged across everything we track, Claude Opus 5 sits at 55.0% and Gemini 3.7 Flash at 59.8%.
Gemini 3.7 Flash is the cheaper API at $0.75 per million input tokens and $3.75 per million output tokens, roughly 7 times cheaper than Claude Opus 5 at $5 and $25. Both accept a context window of about 1M tokens. Both accept text and images as input.
| Characteristic | Claude Opus 5 | Gemini 3.7 Flash |
|---|---|---|
| Company | Anthropic | |
| Release Date | July 24, 2026 | August 13, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 66K |
| Input Price / 1M | $5.00 | $0.75 |
| Output Price / 1M | $25.00 | $3.75 |
| Average Score | 55.0% | 59.8% |
| Benchmarks | ||
| BioMysteryBench | 90.1% | 43.5% |
| OSWorld 2.0 | 70.6% | 47.9% |
| FrontierCode 1.1 | 53.4% | 43.6% |
| AutomationBench | 26.0% | 30.4% |
| DeepSWE 1.1 | 68.8% | 65.3% |
Visual Benchmark Comparison
Verdict
Gemini 3.7 Flash leads in 3 out of 4 comparison categories.
Both models show comparable average scores: Claude Opus 5 — 0.5, Gemini 3.7 Flash — 0.6.
Gemini 3.7 Flash is 6.7x cheaper: input $0.75/1M vs $5.00/1M tokens.
Gemini 3.7 Flash supports a larger context: 1M vs 1M tokens.
Gemini 3.7 Flash is newer: released 8/13/2026 vs 7/24/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or Gemini 3.7 Flash?
Which model is cheaper — Claude Opus 5 or Gemini 3.7 Flash?
Which has a larger context window — Claude Opus 5 or Gemini 3.7 Flash?
The Claude Opus 5 and Gemini 3.7 Flash comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 5 or Gemini 3.7 Flash page. See also the complete list of AI model comparisons.