Pairwise benchmark snapshot · Aug 16, 2026

Gemini 3.7 Flash vs GPT-5.6 Terra benchmark

Name: Gemini 3.7 Flash vs GPT-5.6 Terra AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

This page compares Gemini 3.7 Flash (Google) and GPT-5.6 Terra (OpenAI) using the latest snapshots we have as of Aug 16, 2026. On preference Elo, GPT-5.6 Terra is ahead by 18 points (1,548 vs 1,530; seed-bootstrap (Aug 16, 2026)). On SWE-bench coding, Gemini 3.7 Flash resolves 72.4% versus 70.4% (seed-bootstrap (Aug 16, 2026)). Gemini 3.7 Flash streams faster (215 tok/s) while Gemini 3.7 Flash is the cheaper output token ($1.88/1M). GPT-5.6 Terra has the larger context window (1.1M tokens). Every cell below is a dated snapshot from a named public source — we do not invent missing scores, and we do not run SWE-bench ourselves.

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Google

Gemini 3.7 Flash

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).

Elo 1,530$1.875/1M out

OpenAI

GPT-5.6 Terra

OpenAI 5.6 mid tier. Official API $2/$12 per 1M after the Jul 30 2026 price cut.

Elo 1,548$6/1M out

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Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 3.7 Flash (7)vsGPT-5.6 Terra (3)

Gemini 3.7 Flash: 7W (70%)Overall: Gemini 3.7 FlashGPT-5.6 Terra: 3W (30%)

← Gemini 3.7 FlashGPT-5.6 Terra →

Gemini 3.7 Flash (3/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,530vs1,548

Coding Elo

1,546vs1,542

SWE-bench

72.4%vs70.4%

LiveBench

69.6%vs69.1%

GPQA Diamond

81.2%vs82%

Gemini 3.7 Flash: 3WGPT-5.6 Terra: 2W

Gemini 3.7 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

215 tok/svs128 tok/s

Time to first token

82 msvs160 ms

Gemini 3.7 Flash: 2WGPT-5.6 Terra: 0W

Gemini 3.7 Flash (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$1.88/1Mvs$6/1M

Input price

$0.38/1Mvs$1/1M

Context window

1Mvs1.1M

Gemini 3.7 Flash: 2WGPT-5.6 Terra: 1W

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect

Percentile 0–100

Dimensional AdvantageGemini 3.7 Flash 3/6

Preference Elo

GPT-5.6 Terra

18 pts advantage

Throughput Speed

Gemini 3.7 Flash

87 tok/s faster

Price Efficiency

Gemini 3.7 Flash

$4.13/1M cheaper

Full Benchmark Score Matrix

—

Elo

High is better

1,530

EloHigh is better

1,548+1%

Code Elo

High is better

1,546

Code EloHigh is better

1,542

LiveBench

High is better

+1%69.6%

LiveBenchHigh is better

69.1%

SWE-bench

High is better

+3%72.4%

SWE-benchHigh is better

70.4%

GPQA

High is better

81.2%

GPQAHigh is better

82%+1%

TTFT

Low is better

+95%82 ms

TTFTLow is better

160 ms

Speed

High is better

+68%215 tok/s

SpeedHigh is better

128 tok/s

In $

Low is better

+167%$0.38/1M

In $Low is better

$1/1M

Out $

Low is better

+220%$1.88/1M

Out $Low is better

$6/1M

Context

High is better

ContextHigh is better

1.1M

Interactive Simulator

Workload Cost & Savings Calculator

Simulate monthly production API costs based on published $/1M tokens.

Save up to 67% with Gemini 3.7 Flash

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Gemini 3.7 Flash$41.25 / mo

In: $13.13Out: $28.13

GPT-5.6 Terra$125.00 / mo

In: $35.00Out: $90.00

Estimated Cost Delta

Gemini 3.7 Flash is estimated to save $83.75/month ($1,005/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Gemini 3.7 Flash:Pick Gemini 3.7 Flash when repo-level coding accuracy is the constraint.
2
Gemini 3.7 Flash:Pick Gemini 3.7 Flash when time-to-first-token matters more than peak Elo.
3
GPT-5.6 Terra:Pick GPT-5.6 Terra for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsGemini 3.7 Flash

Higher SWE-bench (72.4%).

High-volume chatGemini 3.7 Flash

Lower output list price ($1.88/1M).

Voice / low-latency UIGemini 3.7 Flash

Lower TTFT (82 ms).

Long-document RAGGPT-5.6 Terra

Larger window (1.1M).

Screenshots / visionGPT-5.6 Terra

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 ($1.88/1M).
Voice / low-latency UI	Gemini 3.7 Flash	Lower TTFT (82 ms).
Long-document RAG	GPT-5.6 Terra	Larger window (1.1M).
Screenshots / vision	GPT-5.6 Terra	Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Terra).

Related Editorial Dispatches & Benchmark Notes

View all news

compareAug 13, 2026

Gemini Flash vs Pro: when Flash is the whole product

3.7 Flash vs 3.6 Pro is the current Google volume-versus-upgrade pair.

priceAug 13, 2026

Gemini 3.6 Flash (Jul 21) now shares the 3.7 intro rate

Jul 21 workhorse that inherited $0.75/$3.75 through year-end. Keep the row; 3.7 is the newer sibling.

launchAug 13, 2026

Gemini 3.7 Flash (Aug 13): $0.75/$3.75 intro through Dec 31 2026

Google’s current workhorse drop. Official intro list and 1,048,576-token context. Compare to Luna and Haiku.

priceJul 30, 2026

GPT-5.6 Terra after the Jul 30 cut: $2/$12 mid-tier

Terra is OpenAI’s Sonnet-class invoice. Use it when Sol is too expensive and Luna is too small.

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LIVE

Google

Gemini 3.7 Flash

Elo 1,530

LiveBench69.6%

SWE-bench72.4%

Speed215 tok/s

Output cost$1.88/1M

OpenAI

GPT-5.6 Terra

Elo 1,548

LiveBench69.1%

SWE-bench70.4%

Speed128 tok/s

Output cost$6/1M

Frequently Asked Questions

Which is better overall, Gemini 3.7 Flash or GPT-5.6 Terra?: GPT-5.6 Terra has the higher preference Elo in our latest snapshot (1,548). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 3.7 Flash or GPT-5.6 Terra?: Gemini 3.7 Flash leads SWE-bench at 72.4% vs 70.4%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?: Gemini 3.7 Flash output tokens are $1.88/1M versus $6/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 3.7 Flash or GPT-5.6 Terra?: Gemini 3.7 Flash has the lower time-to-first-token (82 ms vs 160 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?: GPT-5.6 Terra accepts 1.1M tokens versus 1M.
Can I self-host either model?: Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?: No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?: Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 3.7 Flash and GPT-5.6 Terra Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Gemini 3.7 Flash matchups →|All GPT-5.6 Terra matchups →

Gemini 3.7 Flash vs Gemini 3.6 Flash (previous gemini-flash)GPT-4.5 Orion vs GPT-5.6 Terra Gemini 3 Pro vs GPT-5.6 Terra GPT-5 vs GPT-5.6 Terra Gemini 3 Flash vs Gemini 3.7 Flash Gemini 2.0 Flash Thinking vs Gemini 3.7 Flash

Gemini 3.7 Flash vs GPT-5.6 Terra benchmark

Interactive Comparison Diagram

Matchup Breakdown

Tug-of-War Matchup Matrix

Category wins across intelligence, speed, and pricing efficiency.

Gemini 3.7 Flash (7)vsGPT-5.6 Terra (3)

Gemini 3.7 Flash: 7W (70%)Overall: Gemini 3.7 FlashGPT-5.6 Terra: 3W (30%)

← Gemini 3.7 FlashGPT-5.6 Terra →

Gemini 3.7 Flash (3/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo

1,530vs1,548

Coding Elo

1,546vs1,542

SWE-bench

72.4%vs70.4%

LiveBench

69.6%vs69.1%

GPQA Diamond

81.2%vs82%

Gemini 3.7 Flash: 3WGPT-5.6 Terra: 2W

Gemini 3.7 Flash (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed

215 tok/svs128 tok/s

Time to first token

82 msvs160 ms

Gemini 3.7 Flash: 2WGPT-5.6 Terra: 0W

Gemini 3.7 Flash (2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price

$1.88/1Mvs$6/1M

Input price

$0.38/1Mvs$1/1M

Context window

1Mvs1.1M

Gemini 3.7 Flash: 2WGPT-5.6 Terra: 1W

Recommended Workload Routing

Repo / coding agentsGemini 3.7 Flash

Higher SWE-bench (72.4%).

High-volume chatGemini 3.7 Flash

Lower output list price ($1.88/1M).

Voice / low-latency UIGemini 3.7 Flash

Lower TTFT (82 ms).

Long-document RAGGPT-5.6 Terra

Larger window (1.1M).

Screenshots / visionGPT-5.6 Terra

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 ($1.88/1M).
Voice / low-latency UI	Gemini 3.7 Flash	Lower TTFT (82 ms).
Long-document RAG	GPT-5.6 Terra	Larger window (1.1M).
Screenshots / vision	GPT-5.6 Terra	Both accept images. Defaulting to the higher-Elo side (GPT-5.6 Terra).

Frequently Asked Questions

Which is better overall, Gemini 3.7 Flash or GPT-5.6 Terra?

GPT-5.6 Terra has the higher preference Elo in our latest snapshot (1,548). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, Gemini 3.7 Flash or GPT-5.6 Terra?

Gemini 3.7 Flash leads SWE-bench at 72.4% vs 70.4%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

Gemini 3.7 Flash output tokens are $1.88/1M versus $6/1M. Input prices and retry rates still move the real bill.

Which is faster, Gemini 3.7 Flash or GPT-5.6 Terra?

Gemini 3.7 Flash has the lower time-to-first-token (82 ms vs 160 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

GPT-5.6 Terra accepts 1.1M tokens versus 1M.

Can I self-host either model?

Neither model is marked open-weights here. You are comparing hosted APIs.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 3.7 Flash and GPT-5.6 Terra Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

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Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GPT-5.6 Terra

Gemini 3.7 Flash

Gemini 3.7 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Gemini Flash vs Pro: when Flash is the whole product

Gemini 3.6 Flash (Jul 21) now shares the 3.7 intro rate

Gemini 3.7 Flash (Aug 13): $0.75/$3.75 intro through Dec 31 2026

GPT-5.6 Terra after the Jul 30 cut: $2/$12 mid-tier

Cast Your Matchup Vote

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Gemini 3.7 Flash

GPT-5.6 Terra

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons

Swap or Add Any Model to this Matchup

Interactive Comparison Diagram

Tug-of-War Matchup Matrix

Intelligence & Reasoning

Speed & Latency

Pricing & Capacity

Multi-Dimensional Capability Radar

GPT-5.6 Terra

Gemini 3.7 Flash

Gemini 3.7 Flash

Full Benchmark Score Matrix

Workload Cost & Savings Calculator

Key Selection Recommendations

Recommended Workload Routing

Related Editorial Dispatches & Benchmark Notes

Gemini Flash vs Pro: when Flash is the whole product

Gemini 3.6 Flash (Jul 21) now shares the 3.7 intro rate

Gemini 3.7 Flash (Aug 13): $0.75/$3.75 intro through Dec 31 2026

GPT-5.6 Terra after the Jul 30 cut: $2/$12 mid-tier

Cast Your Matchup Vote

Community Discussions (0)

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CompareLLM Matrix

Gemini 3.7 Flash

GPT-5.6 Terra

Frequently Asked Questions

Related news

Similar Head-to-Head Comparisons