Gemini 3.6 Flash vs Grok 4.5: Specs & Benchmark Comparison
Gemini 3.6 Flash is developed by Google, while Grok 4.5 comes from xAI. Both were released in July 2026.
The two models share 3 published benchmarks. Grok 4.5 leads on 3 of them. The widest gaps are on SWE-Bench Pro, where Grok 4.5 scores 65.0% against 58.7%; DeepSWE 1.1, where Grok 4.5 scores 54.0% against 49.0%. Averaged across everything we track, Gemini 3.6 Flash sits at 68.0% and Grok 4.5 at 52.9%.
Gemini 3.6 Flash is the cheaper API at $1.50 per million input tokens and $7.50 per million output tokens, about 33% below Grok 4.5 at $2 and $6. Gemini 3.6 Flash takes the larger context window at 1M tokens, compared with 500K for Grok 4.5. Both accept text and images as input.
| Characteristic | Gemini 3.6 Flash | Grok 4.5 |
|---|---|---|
| Company | xAI | |
| Release Date | July 21, 2026 | July 16, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 500K |
| Context (output) | 66K | — |
| Input Price / 1M | $1.50 | $2.00 |
| Output Price / 1M | $7.50 | $6.00 |
| Average Score | 68.0% | 52.9% |
| Benchmarks | ||
| SWE-Bench Pro | 58.7% | 65.0% |
| DeepSWE 1.1 | 49.0% | 54.0% |
| Terminal-Bench 2.1 | 78.0% | 83.0% |
Visual Benchmark Comparison
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Gemini 3.6 Flash — 0.7, Grok 4.5 — 0.5.
Grok 4.5 is 1.1x cheaper: input $2.00/1M vs $1.50/1M tokens.
Gemini 3.6 Flash supports a larger context: 1M vs 500K tokens.
Both models were released around the same time: 7/21/2026 and 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Gemini 3.6 Flash or Grok 4.5?
Which model is cheaper — Gemini 3.6 Flash or Grok 4.5?
Which has a larger context window — Gemini 3.6 Flash or Grok 4.5?
The Gemini 3.6 Flash and Grok 4.5 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Gemini 3.6 Flash or Grok 4.5 page. See also the complete list of AI model comparisons.