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LLM Toolkit

Model comparison

Gemini 3.7 Flash vs Gemini 3.5 Flash

Verified pricing, context windows and real-workload costs for both models — computed from official provider rates as of 2026-09-02.

Cheaper input

Gemini 3.7 Flash

$0.75 /1M in

Cheaper output

Gemini 3.7 Flash

$3.75 /1M out

Bigger context

Tie — both models

1M tokens each

Head to head

Spec Gemini 3.7 Flash Gemini 3.5 Flash
Input / 1M tokens $0.75 $1.50
Cached input / 1M $0.075 $0.15
Output / 1M tokens $3.75 $9.00
Context window 1M 1M
Provider Google Google
Price verified 2026-09-02 2026-09-02

Gemini 3.7 Flash: Intro pricing through Dec 31, 2026 — rises to $1.50 in / $7.50 out on Jan 1, 2027

Monthly cost at three real workloads

Workload Gemini 3.7 Flash Gemini 3.5 Flash Winner
Side-project chatbot 30K req · 2,000 in / 500 out · 40% cached $85.05/mo $192.60/mo Gemini 3.7 Flash
Coding agent 500K req · 12,000 in / 1,500 out · 70% cached $4,478/mo $10,080/mo Gemini 3.7 Flash
Bulk extraction 2,000K req · 800 in / 120 out · 20% cached $1,884/mo $4,128/mo Gemini 3.7 Flash

Computed from list prices verified 2026-09-02. Cache savings blend normal and cached input rates by the hit rate; models without published cached rates use the base input price. Adjust every parameter yourself on the API Cost Calculator.

Pick Gemini 3.7 Flash if…

  • Input cost dominates your bill — it charges $0.75 per 1M input vs $1.50.
  • Its 1M window matches Gemini 3.5 Flash — context is not a differentiator here.
  • You run repeat-context workloads — cached input at $0.075 per 1M is the better deal.

Pick Gemini 3.5 Flash if…

  • Output-heavy agent loops favor its $9.00 output rate.
  • Its 1M window covers your typical request with headroom.
  • You want cheaper total spend at your exact volumes — verify with the calculator above.

Frequently asked questions

Is Gemini 3.7 Flash cheaper than Gemini 3.5 Flash?

Gemini 3.7 Flash is cheaper on input at $0.75 per 1M tokens vs $1.50 — input pricing is 2.0× less expensive. On output, Gemini 3.7 Flash wins at $3.75 vs $9.00. At a balanced workload (100K requests, 2K in / 500 out), Gemini 3.7 Flash runs $337.50/mo vs $750.00/mo — a 2.2× difference.

Gemini 3.7 Flash vs Gemini 3.5 Flash: which has the bigger context window?

Neither — both ship the same 1M context window. Filling it once costs $0.750 on Gemini 3.7 Flash at list price, vs $1.50 on Gemini 3.5 Flash.

Should I switch from Gemini 3.7 Flash to Gemini 3.5 Flash?

Switch if your bottleneck matches Gemini 3.5 Flash's strengths: its 1M context fits your documents and its pricing profile. Stay on Gemini 3.7 Flash if input cost dominates your bill — Gemini 3.7 Flash charges $0.75 per 1M in. Test both with your real token counts before committing.

Keep comparing

Or measure your real usage with the AI Token Counter and browse all rates on the Pricing Comparison.