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Comparison · 2 models · Updated Oct 4, 2026

Gemini 2.0 Flash vs Gemini 2.5 Pro

Gemini 2.5 Pro comes out ahead, 76 to 65 on our weighted score, and it is the cheaper option too.

  1. Google

    Gemini 2.0 Flash

    Released Dec 11, 2024

    65/100
    • ECI134.7
    • Price—
    • Context1.05M
    Full specs Remove Gemini 2.0 Flash
  2. Our pick

    Google

    Gemini 2.5 Pro

    Released Jun 17, 2025

    76/100
    • ECI145.3
    • Price$1.25 / $10.00
    • Context1.05M
    Full specs Remove Gemini 2.5 Pro

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Gemini 2.5 Pro is our pick

Gemini 2.5 Pro is the better all-round choice, scoring 76/100 against Gemini 2.0 Flash (65). It leads on capability and inputs & features. The score weighs capability 67%, inputs & features 20%, context window 13%.

  • CapabilityGemini 2.5 ProCapabilities Index (ECI): Gemini 2.5 Pro 145.3 · Gemini 2.0 Flash 134.7
  • Lowest priceGemini 2.5 ProGemini 2.5 Pro $3.44 per 1M tokens (3:1 blend) · Gemini 2.0 Flash unpriced
  • Longest contextAbout the sameGemini 2.0 Flash 1,048,576 · Gemini 2.5 Pro 1,048,576 tokens
  • Widest inputsSame inputsGemini 2.0 Flash: Text, Images, PDFs, Audio, Video · Gemini 2.5 Pro: Text, Images, PDFs, Audio, Video
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightGemini 2.0 FlashGemini 2.5 Pro
CapabilityCapabilities Index (ECI)67%5972
Inputs & features20%90100
Context window13%6161
Overall100%65/10076/100

Left out because at least one model lacks the data: price. The remaining weights were rescaled.

02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Gemini 2.0 Flash vs Gemini 2.5 Pro specifications side by side
SpecificationGemini 2.0 FlashGoogleGemini 2.5 ProGoogle
Capability
Capabilities Index (ECI)134.7145.3 (best)
ECI rank#116 of 148#78 of 148 (best)
GPQA DiamondGraduate-level science questions—85.3%
FrontierMath Tiers 1–3Research-level mathematics—24.6%
OTIS Mock AIME 2024–2025Competition mathematics—84.7%
SWE-bench VerifiedFixing real GitHub issues—57.6%
Price per million tokens
Input—$1.25
Output—$10.00
Cached input—$0.125
Blended (3:1)—$3.44
Long-context rate—Over 200K: $2.50 / $15.00
Price source—Official Google API
Limits
Context window1,048,576 tokens1,048,576 tokens
Max output8,192 tokens65,536 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesYes
AudioYesYes
VideoYesYes
ReasoningNoYes
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryProprietary
API model ID—gemini-2.5-pro
API providers—22
ReleasedDec 11, 2024Jun 17, 2025
Knowledge cutoffJun 2024Jan 2025
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Gemini 2.0 Flash—
  • Gemini 2.5 Pro$32.50
04 — Questions

Which should you choose?

Which is better: Gemini 2.0 Flash or Gemini 2.5 Pro?

Gemini 2.5 Pro is the better all-round choice, scoring 76/100 against Gemini 2.0 Flash (65). It leads on capability and inputs & features. The score weighs capability 67%, inputs & features 20%, context window 13%.

Which is cheaper, Gemini 2.0 Flash or Gemini 2.5 Pro?

Gemini 2.5 Pro is cheaper at $1.25 input / $10.00 output per million tokens (official Google API price). . At a typical mix of three input tokens to one output token, that is $3.44 per million tokens for Gemini 2.5 Pro versus . Gemini 2.0 Flash has no published per-token price.

Which scores higher on benchmarks?

Gemini 2.5 Pro scores higher on the Capabilities Index (ECI): Gemini 2.5 Pro 145.3 (#78 of 148) and Gemini 2.0 Flash 134.7 (#116 of 148). Their confidence ranges do not overlap (143.6–146.9 vs 124.3–136.7), so the gap is a real one.

Which is better for coding?

There are no published SWE-bench Verified results for Gemini 2.0 Flash yet, so there is no like-for-like coding score. On overall capability, Gemini 2.5 Pro leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

Gemini 2.0 Flash and Gemini 2.5 Pro share the same 1,048,576-token context window. Maximum output per response: Gemini 2.0 Flash up to 8,192, Gemini 2.5 Pro up to 65,536 tokens.

Which can read images, PDFs, audio or video?

Gemini 2.0 Flash accepts text, images, PDFs, audio and video; Gemini 2.5 Pro accepts text, images, PDFs, audio and video. They handle the same number of input types.

Are any of these open source?

No. Gemini 2.0 Flash and Gemini 2.5 Pro are proprietary and only available through APIs and apps.

Which is newer?

Gemini 2.5 Pro is the newest, released Jun 17, 2025. Gemini 2.0 Flash came out Dec 11, 2024. Knowledge cutoff: Gemini 2.0 Flash Jun 2024, Gemini 2.5 Pro Jan 2025.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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