Pairwise benchmark snapshot · Aug 16, 2026
In this head-to-head showdown, GPT-5.6 Terra delivers higher overall intelligence and human-preferred responses (Elo 1,548 vs 1,530), while Gemini 3.7 Flash leads in SWE-bench software engineering benchmarks (72.4%), while Gemini 3.7 Flash is more budget-friendly at $3.75/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.
10 direct benchmark disciplines evaluated across capability, speed, and cost
Google Aug 13 2026 workhorse. Official intro price $0.75/$3.75 per 1M through Dec 31 2026; 1,048,576-token context (Google blog).
OpenAI 5.6 mid tier. Official API $2/$12 per 1M after the Jul 30 2026 price cut.
Currently comparing Gemini 3.7 Flash vs GPT-5.6 Terra. Alternative family tiers available.
Δ 18 Arena Elo pts
215 tok/s
$3.75 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Gemini 3.7 Flash | GPT-5.6 Terra | Advantage Delta |
|---|---|---|---|
| Preference Elo | +18 | ||
| Coding Elo | +4 | ||
| LiveBench | +0.5% | ||
| SWE-bench | +2% | ||
| GPQA Diamond | +0.8% | ||
| Time to first token | +78 ms | ||
| Output speed | 215 tok/s | 128 tok/s | +87 tok/s |
| Input price | $0.75/1M | +$1.25/1M | |
| Output price | $3.75/1M | +$8.25/1M | |
| Context window | +49k |
Simulate monthly production API costs in USD (US Dollar).
Gemini 3.7 Flash is estimated to save $167.50/month ($2,010/year).
Higher SWE-bench (72.4%).
Lower output list price ($3.75/1M).
Lower TTFT (82 ms).
Larger window (1M).
Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Terra).
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Gemini 3.7 Flash | Higher SWE-bench (72.4%). |
| High-volume chat | Gemini 3.7 Flash | Lower output list price ($3.75/1M). |
| Voice / low-latency UI | Gemini 3.7 Flash | Lower TTFT (82 ms). |
| Long-document RAG | Gemini 3.7 Flash | Larger window (1M). |
| Screenshots / vision | GPT-5.6 Terra | Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Terra). |
3.7 Flash vs 3.6 Pro is the current Google volume-versus-upgrade pair.
Jul 21 workhorse that inherited $0.75/$3.75 through year-end. Keep the row; 3.7 is the newer sibling.
Google’s current workhorse drop. Official intro list and 1,048,576-token context. Compare to Luna and Haiku.
Terra is OpenAI’s Sonnet-class invoice. Use it when Sol is too expensive and Luna is too small.
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Verified Head-to-Head Telemetry
compare · Aug 13, 2026
Gemini Flash vs Pro: when Flash is the whole product
price · Aug 13, 2026
Gemini 3.6 Flash (Jul 21) now shares the 3.7 intro rate
launch · Aug 13, 2026
Gemini 3.7 Flash (Aug 13): $0.75/$3.75 intro through Dec 31 2026
price · Jul 30, 2026
GPT-5.6 Terra after the Jul 30 cut: $2/$12 mid-tier