Compare / head-to-head
Gemini 3.5 Flash-LitevsGPT-5.6 Terra
GPT-5.6 Terra leads 4 of 4 shared benchmarks. Gemini 3.5 Flash-Lite is 5x cheaper per token. GPT-5.6 Terra has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 4
GPT-5.6 Terra leads
Cheaper per token
Gemini 3.5 Flash-Lite
5x cheaper, input + output
Larger context
GPT-5.6 Terra
1.1M tokens
Provider uptime (30d)
100% · 95.3216%
Google · OpenAI
Gemini 3.5 Flash-Lite
Google · released 2026-07-21
textvisionaudio
GPT-5.6 Terra
OpenAI · released 2026-07-09
textvision
Quality
Benchmark matrix
4 shared · 1 only Gemini 3.5 Flash-Lite · 3 only GPT-5.6 Terra| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Terra | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 4 | ||||
| GPQA Diamond | 83.3% ↗epoch | 92.9% ↗ | -9.6 pt | GPT-5.6 Terra |
| FrontierMath Tier 4 v2 (Epoch AI run) | 0% ↗epoch | 70.7% ↗epoch | -70.7 pt | GPT-5.6 Terra |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 26% ↗epoch | 86% ↗epoch | -60 pt | GPT-5.6 Terra |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 71.1% ↗epoch | 99.7% ↗epoch | -28.6 pt | GPT-5.6 Terra |
| Only Gemini 3.5 Flash-Lite reports · 1 | ||||
| LMArena Elo | 1435.5 ↗ | not reported | — | — |
| Only GPT-5.6 Terra reports · 3 | ||||
| DeepSWE v1.1 | not reported | 69.6% ↗ | — | — |
| SimpleQA Verified | not reported | 43.2% ↗epoch | — | — |
| SWE-Bench Pro | not reported | 63.4% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Gemini 3.5 Flash-Lite minus GPT-5.6 Terra in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Gemini 3.5 Flash-Lite | GPT-5.6 Terra | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 1.1M tokens | GPT-5.6 Terra |
| Max output | 66K tokens | 128K tokens | GPT-5.6 Terra |
| Input price / 1M | $0.3 ↗ | $2 ↗ | Gemini 3.5 Flash-Lite |
| Output price / 1M | $2.5 ↗ | $12 ↗ | Gemini 3.5 Flash-Lite |
| Cached input / 1M | $0.03 ↗ | $0.2 ↗ | Gemini 3.5 Flash-Lite |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $2.8 | $14 | Gemini 3.5 Flash-Lite |
| Modalities | text · vision · audio | text · vision | Gemini 3.5 Flash-Lite |
| Released | 2026-07-21 | 2026-07-09 | — |
| Cited benchmark scores | 5 | 8 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Gemini 3.5 Flash-Lite vs …
Models sharing the most benchmarksMore matchups
GPT-5.6 Terra vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 3.5 Flash-Lite and GPT-5.6 Terra on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.