LLM Comparison
Gemini 3.6 Flash vs GPT-5.6 Terra
Side-by-side specs, pricing & capabilities · Updated September 2026
Price vs Intelligence
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2/6 models| Organization | ||
| OpenTools Score | 54 12.0 | 70 10.1 |
| Family | Gemini | GPT-5.6 |
| Status | Current | Current |
| Release Date | Jul 2026 | Jul 2026 |
| Context Window | 1.0M tokens | 1.1M tokens |
| Input Price | $1.50/M tokens | $2.00/M tokens |
| Output Price | $7.50/M tokens | $12.00/M tokens |
| Pricing Notes | DeepMind model page lists $1.50 input and $7.50 output per 1M tokens with no caching in the performance table. The ai.google.dev API docs were attempted through ScrapingBee and returned HTTP 400, so exact billing details beyond the official DeepMind price table were not used. | OpenAI pricing page lists $2.50 input and $15 output per 1M tokens, with GPT-5.6 cache-write and cache-read pricing. |
| Capabilities | textvisionaudio-inputvideo-inputpdf-inputreasoningcodingtool-usesearch-groundingcomputer-usestructured-output | textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents |
| Training Cutoff | — | Feb 16, 2026 |
| Max Output | 64K tokens | 128K tokens |
| API Identifier | gemini-3.6-flash | gpt-5.6-terra |
| Benchmarks | ||
| Artificial Analysis Intelligence Index | 50artificial-analysis | 55artificial-analysis |
| SWE-Bench Pro | 58.7google-deepmind | — |
| Terminal-Bench 2.1 | 78google-deepmind | 88.015artificial-analysis |
| GDPVal-AA v2 | 1421google-deepmind | — |
| Artificial Analysis Intelligence Index v4.3 | 34https://artificialanalysis.ai/models/gemini-3-6-flash | 42.2515artificial-analysis |
| GPQA Diamond | 92.8283artificial-analysis | 92.5253artificial-analysis |
| SciCode | 53.3565artificial-analysis | 54.9769artificial-analysis |
| Artificial Analysis Coding Agent Index | — | 77.4artificial-analysis |
| View Gemini 3.6 Flash | View GPT-5.6 Terra | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Gemini 3.6 FlashCheapest | $1.50 | $3.75 | $5.25 | — |
| GPT-5.6 Terra | $2.00 | $6.00 | $8.00 | +52% |
Gemini 3.6 Flash
Gemini 3.6 Flash is Google DeepMind general availability Flash model for coding, agentic execution, spatial reasoning, multimodal understanding, and long-context production workflows. Official DeepMind evidence lists 1M input tokens, 64k output tokens, text, image, video, audio, and PDF inputs, text output, tool use, Gemini API availability, and $1.50 input / $7.50 output pricing per million tokens.
OpenAI
GPT-5.6 Terra
GPT-5.6 Terra is OpenAI balanced GPT-5.6 model for teams that need strong reasoning and agentic performance at lower cost than Sol. OpenAI model docs list a 1.05M token context window, 128K max output, and support for functions, web search, file search, and computer use.
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