Gemini 3.6 Flash vs GPT-5.6 Terra — Price, Context, and Capability Compared
Verdict
GPT-5.6 Terra costs 1.3× more per blended million tokens than Gemini 3.6 Flash. Gemini 3.6 Flash has the larger context window (1,000,000 tokens). Default to Gemini 3.6 Flash unless you specifically need GPT-5.6 Terra's edge.
Spec comparison
| Gemini 3.6 Flash | GPT-5.6 Terra | |
|---|---|---|
| Price (input) | $1.50/M ✓ | $2.00/M |
| Price (output) | $9.00/M ✓ | $12.00/M |
| Blended price | $3.38/M ✓ | $4.50/M |
| Context window | 1,000,000 tokens ✓ | 400,000 tokens |
| Max output | 64,000 tokens | 128,000 tokens ✓ |
| Modalities | text, vision, audio | text, vision |
| Reasoning mode | Yes | Yes |
| Released | 2026-06 | 2026-06 |
| Speed | 114 t/s ✓ | 78 t/s |
Cost at scale (3:1 blended)
| Tokens / month | Gemini 3.6 Flash | GPT-5.6 Terra | Delta |
|---|---|---|---|
| 1,000,000 | $3.38 | $4.50 | $1.13 (1.3×) |
| 10,000,000 | $33.75 | $45.00 | $11.25 (1.3×) |
| 100,000,000 | $337.50 | $450.00 | $112.50 (1.3×) |
Choose Gemini 3.6 Flash if…
- ✓Faster than Gemini 3.5 Flash
- ✓Top-tier coding and agentic performance for its price
- ✓1M-token context
- ✓Latency-sensitive coding and agentic tasks that still need a huge context window.
Choose GPT-5.6 Terra if…
- ✓Balanced cost-to-intelligence ratio
- ✓Reasoning mode available on demand
- ✓Same 400K context as Sol
- ✓Everyday production workloads that need strong quality without Sol-tier pricing.
Run this exact matchup right now
Send the same prompt to Gemini 3.6 Flash and GPT-5.6 Terra side by side and see the outputs yourself.
Try Gemini 3.6 Flash vs GPT-5.6 Terra FreeFAQ
Is Gemini 3.6 Flash cheaper than GPT-5.6 Terra?
Gemini 3.6 Flash is cheaper, at $3.38 per million blended tokens vs $4.50 for GPT-5.6 Terra.
Which has the bigger context window, Gemini 3.6 Flash or GPT-5.6 Terra?
Gemini 3.6 Flash has the larger context window: 1,000,000 tokens vs 400,000.
Can Gemini 3.6 Flash replace GPT-5.6 Terra for coding?
Both are viable for coding. Faster than Gemini 3.5 Flash (Gemini 3.6 Flash) vs Balanced cost-to-intelligence ratio (GPT-5.6 Terra) — pick based on which strength matters more for your workload.
Which is faster, Gemini 3.6 Flash or GPT-5.6 Terra?
Gemini 3.6 Flash is faster: 114 t/s vs 78 t/s, measured on our speed benchmarks.
Related
Pricing verified 2026-07-22. Specs verified 2026-08-08.
