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Model A
Gemini 2.5 Pro

Google

57.98/100

Supported · Public rank #89

90% interval 45.170.9

Gemini 2.5 Pro vs Gemini 3.6 Flash

Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

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Model B
Gemini 3.6 Flash

Google

70.11/100

Supported · Public rank #21

90% interval 63.775.9

Decision reading

The public evidence has no benchmark result shared by both models, so it does not support a quality verdict. Use the documented cost, context, and runtime rows instead.

0 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

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Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Coding work

    Code generation, repair, and software-engineering tasks

    Gemini 3.6 Flash

    Gemini 3.6 Flash leads on the public coding lane, 58.9 to 32, with Supported evidence for both models and non-overlapping 90% intervals.

    Confidence: stronger

  • Chat turn cost

    1K fresh input + 500 output tokens

    Gemini 3.6 Flash

    Gemini 3.6 Flash has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    Gemini 3.6 Flash

    Gemini 3.6 Flash has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    Gemini 2.5 Pro

    Gemini 2.5 Pro has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • Agentic work

    Tool use, computer use, and multi-step task completion

    Not enough matched evidence

    Gemini 2.5 Pro is scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.

    Confidence: limited

  • Long documents

    Prompts that approach the documented context limit

    No clear pick

    The documented context windows are equal.

    Confidence: documented

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

Shared results
0
Gemini 2.5 Pro only
7
Gemini 3.6 Flash only
8
Like-for-like categories
2 / 8

1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Coding

Like-for-like
Gemini 2.5 Pro
32.0
Supported · #165/183
Gemini 3.6 Flash
58.9
Supported · #30/183
Basis
BenchAlign lane · 2 vs 4 public rows
Reading
Gemini 3.6 Flash leads

Knowledge

Like-for-like
Gemini 2.5 Pro
51.2
Supported · #85/181
Gemini 3.6 Flash
68.6
Supported · #18/181
Basis
BenchAlign lane · 2 vs 2 public rows
Reading
Gemini 3.6 Flash leads · intervals overlap

Agentic

Directional only
Gemini 2.5 Pro
49.3
Estimated · #70/151
Gemini 3.6 Flash
50.7
Supported · #60/151
Basis
BenchAlign lane · 1 vs 2 public rows
Reading
Directional only

Reasoning

Not comparable
Gemini 2.5 Pro
68.5
Unranked · 2 rankable rows
Gemini 3.6 Flash
77.8
Unranked · 2 rankable rows
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Gemini 2.5 Pro
35.2
Unranked · 2 rankable rows
Gemini 3.6 Flash
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemini 2.5 Pro
Not ranked
Gemini 3.6 Flash
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Gemini 2.5 Pro
70.1
Unranked · 1 rankable row
Gemini 3.6 Flash
82.3
Unranked · 1 rankable row
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Gemini 2.5 Pro
57.7
#72/120
Gemini 3.6 Flash
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

A shared-evidence shape is not available.

BenchLM does not draw a radar or infer missing axes when the matched evidence is too sparse.

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Gemini 2.5 Pro
$0.00625
Fits in one request
Gemini 3.6 Flash
$0.00525
Fits in one request

Gemini 3.6 Flash has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Gemini 2.5 Pro
$0.0925
Fits in one request
Gemini 3.6 Flash
$0.0975
Fits in one request

Gemini 2.5 Pro has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Gemini 2.5 Pro
$0.15
Fits in one request
Gemini 3.6 Flash
$0.135
Fits in one request

Gemini 3.6 Flash has the lower modeled cost

Costs use the listed standard API rates.

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Gemini 2.5 Pro

$0.125 per 1M cached input tokens

Google Gemini API pricing

Gemini 3.6 Flash

$0.15 per 1M cached input tokens

Google Gemini API pricing

Reasoning profile

Gemini 2.5 Pro

Non-Reasoning

Gemini 3.6 Flash

Reasoning

Weight access

Gemini 2.5 Pro

Proprietary

Gemini 3.6 Flash

Proprietary

License

Gemini 2.5 Pro

Proprietary

Gemini 3.6 Flash

Proprietary

Release date

Gemini 2.5 Pro

2025-03-01

Gemini 3.6 Flash

2026-07-21

If you already use one of these models
Deployment change
Both entries list Google as the provider. Confirm endpoint, model ID, limits, and feature support before switching.
Quality signal
The public evidence has no benchmark result shared by both models, so it does not support a quality verdict.
Workload cost
Repository review: $0.0925 vs $0.0975. Cache-heavy agent loop: $0.15 vs $0.135.
Context tradeoff
Both models list 1M.

Run the same representative tasks against both endpoints before changing production traffic.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence15 rows

Agentic

  • Gert Labs

    Gemini 2.5 Pro42.01%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • OSWorld-Verified

    Gemini 2.5 Pro
    Gemini 3.6 Flash83%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Gemini 2.5 Pro
    Gemini 3.6 Flash73.8%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    Gemini 2.5 Pro63.8%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • Vibe Code Bench

    Gemini 2.5 Pro0.40%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • deepSwe

    Gemini 2.5 Pro
    Gemini 3.6 Flash49%
    Source

    Not directly comparable

  • cursorBench32

    Gemini 2.5 Pro
    Gemini 3.6 Flash53.5%
    Source

    Not directly comparable

  • LiveCodeBench (Vals)

    Gemini 2.5 Pro
    Gemini 3.6 Flash88.1%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    Gemini 2.5 Pro
    Gemini 3.6 Flash79.6%
    Source

    Not directly comparable

Knowledge

  • GPQA

    Gemini 2.5 Pro83%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • HLE

    Gemini 2.5 Pro18.8%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • GPQA Diamond (Vals)

    Gemini 2.5 Pro
    Gemini 3.6 Flash93.4%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    Gemini 2.5 Pro
    Gemini 3.6 Flash89.3%
    Source

    Not directly comparable

Math

  • FrontierMath v2 (Tiers 1-3)

    Gemini 2.5 Pro14.138%
    Source
    Gemini 3.6 Flash

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemini 2.5 Pro4.167%
    Source
    Gemini 3.6 Flash

    Not directly comparable

Frequently asked questions

Which is better, Gemini 2.5 Pro or Gemini 3.6 Flash?

The public evidence has no benchmark result shared by both models, so it does not support a quality verdict. The page therefore keeps the decision tied to the specific documented workload.

Which is better for coding, Gemini 2.5 Pro or Gemini 3.6 Flash?

Gemini 3.6 Flash leads the public coding lane, 58.9 to 32, with Supported evidence for both models and non-overlapping 90% intervals.

Which is better for agentic tasks, Gemini 2.5 Pro or Gemini 3.6 Flash?

Gemini 3.6 Flash scores higher for agentic tasks on the public lane, 50.7 to 49.3. Gemini 2.5 Pro is scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which costs less, Gemini 2.5 Pro or Gemini 3.6 Flash?

For the stated presets, chat costs $0.00625 on Gemini 2.5 Pro and $0.00525 on Gemini 3.6 Flash; repository review costs $0.0925 and $0.0975; the cache-heavy agent loop costs $0.15 and $0.135. Costs use the listed standard API rates.

Which has the larger context window, Gemini 2.5 Pro or Gemini 3.6 Flash?

Both models list the same context window, 1M.

Related comparisons

Last updated September 4, 2026

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