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BenchLM
Model A
o3-mini

OpenAI

46.4/100

Supported · Public rank #150

90% interval 31.8–61.1

o3-mini vs Sakana Fugu-Ultra

Updated August 13, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

Model B
Sakana Fugu-Ultra

Sakana AI

—

Evidence status unavailable

90% interval unavailable

Decision reading

At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.

1 results are shared. Category rows based on different benchmark sets are marked directional and do not name a winner.

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.

  • Long documents

    Prompts that approach the documented context limit

    Sakana Fugu-Ultra

    Sakana Fugu-Ultra has the larger documented context window.

    Confidence: documented

Show secondary and unsupported calls

  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    No shared weighted benchmark basis supports a winner.

    Confidence: limited

  • Agentic work

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

    Not enough matched evidence

    No shared weighted benchmark basis supports a winner.

    Confidence: limited

  • Chat turn cost

    1K fresh input + 500 output tokens

    Not enough matched evidence

    A complete comparable API-rate estimate is not available for both models.

    Confidence: listed-rates

  • Cache-heavy agent loop cost

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

    Not enough matched evidence

    The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. o3-mini does not fit this workload in one request. o3-mini has no published cached-input rate, so cached tokens use its listed input rate. Sakana Fugu-Ultra has no comparable published API token rate.

    Confidence: rate-fallback

  • Repository review cost

    50K fresh input + 3K output tokens

    Not enough matched evidence

    A complete comparable API-rate estimate is not available for both models.

    Confidence: listed-rates

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
1
o3-mini only
4
Sakana Fugu-Ultra only
10
Like-for-like categories
1 / 8

Category results, on a stated basis

Each row states whether both averages use the same weighted benchmark set. Directional and not-comparable rows remain visible, but they never receive a winner in this template.

Knowledge

Like-for-like
o3-mini
77.2
Sakana Fugu-Ultra
95.5
Weighted basis
1 vs 1 rows
Reading
Sakana Fugu-Ultra leads

Agentic

Not comparable
o3-mini
Not measured
Sakana Fugu-Ultra
82.1
Weighted basis
0 vs 1 rows
Reading
Not comparable

Coding

Not comparable
o3-mini
49.3
Sakana Fugu-Ultra
64.5
Weighted basis
1 vs 2 rows
Reading
Not comparable

Reasoning

Not comparable
o3-mini
Not measured
Sakana Fugu-Ultra
93.6
Weighted basis
0 vs 1 rows
Reading
Not comparable

Math

Not comparable
o3-mini
Not measured
Sakana Fugu-Ultra
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Multilingual

Not comparable
o3-mini
Not measured
Sakana Fugu-Ultra
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Multimodal

Not comparable
o3-mini
Not measured
Sakana Fugu-Ultra
86.6
Weighted basis
0 vs 1 rows
Reading
Not comparable

Instruction following

Not comparable
o3-mini
93.9
Sakana Fugu-Ultra
Not measured
Weighted basis
1 vs 0 rows
Reading
Not comparable

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.

Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.

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

o3-mini
$0.0033
Fits in one request
Sakana Fugu-Ultra
API rate not published
Fits in one request

Sakana Fugu-Ultra has no comparable published API token rate.

Repository review

50K fresh input + 3K output tokens

o3-mini
$0.0682
Fits in one request
Sakana Fugu-Ultra
API rate not published
Fits in one request

Sakana Fugu-Ultra has no comparable published API token rate.

Cache-heavy agent loop

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

o3-mini
$0.286
Does not fit in one request
Cached input priced at the published list-input rate
Sakana Fugu-Ultra
API rate not published
Fits in one request
Cached-input rate unavailable

o3-mini does not fit this workload in one request. o3-mini has no published cached-input rate, so cached tokens use its listed input rate. Sakana Fugu-Ultra has no comparable published API token rate.

Specification differences

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

Context window

Maximum documented context; output-token limits may be lower.

o3-mini

200K

Sakana Fugu-Ultra

1M

API model ID

o3-mini

Not sourced

Sakana Fugu-Ultra

Not sourced

Cached-input rate

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

o3-mini

Not published

Sakana Fugu-Ultra

No comparable hosted API rate

Documented inputs

o3-mini

Not sourced

Sakana Fugu-Ultra

Not sourced

Documented outputs

o3-mini

Not sourced

Sakana Fugu-Ultra

Not sourced

Provider availability

o3-mini

Not sourced

Sakana Fugu-Ultra

Not sourced

Reasoning profile

o3-mini

Reasoning

Sakana Fugu-Ultra

Reasoning

Weight access

o3-mini

Proprietary

Sakana Fugu-Ultra

Proprietary

License

o3-mini

Proprietary

Sakana Fugu-Ultra

Proprietary

Release date

o3-mini

2025-01-31

Sakana Fugu-Ultra

2026-06-22

If you already use one of these models
Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner.
Workload cost
A complete comparable API-rate estimate is not available for both models.
Context tradeoff
Sakana Fugu-Ultra has the larger documented window (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

  • Terminal-Bench 2.0

    o3-mini—
    Sakana Fugu-Ultra82.1%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    o3-mini49.3%
    Source
    Sakana Fugu-Ultra—

    Not directly comparable

  • SWE-bench Pro

    o3-mini—
    Sakana Fugu-Ultra73.7%
    Source

    Not directly comparable

  • Terminal-Bench 2.0

    o3-mini—
    Sakana Fugu-Ultra82.1%
    Source

    Not directly comparable

  • LiveCodeBench v6

    o3-mini—
    Sakana Fugu-Ultra93.2%
    Source

    Not directly comparable

  • LiveCodeBench Pro

    o3-mini—
    Sakana Fugu-Ultra90.8%
    Source

    Not directly comparable

  • SciCode

    o3-mini—
    Sakana Fugu-Ultra58.7%
    Source

    Not directly comparable

Reasoning

  • MRCRv2

    o3-mini—
    Sakana Fugu-Ultra93.6%
    Source

    Not directly comparable

Knowledge

  • MMLU

    o3-mini86.9%
    Source
    Sakana Fugu-Ultra—

    Not directly comparable

  • GPQA

    o3-mini77.2%
    Source
    Sakana Fugu-Ultra95.5%
    Source

    Sakana Fugu-Ultra leads this result

  • GPQA-D

    o3-mini—
    Sakana Fugu-Ultra95.5%
    Source

    Not directly comparable

  • HLE w/o tools

    o3-mini—
    Sakana Fugu-Ultra50%
    Source

    Not directly comparable

Math

  • AIME 2024

    o3-mini87.3%
    Source
    Sakana Fugu-Ultra—

    Not directly comparable

Multimodal

  • CharXiv

    o3-mini—
    Sakana Fugu-Ultra86.6%
    Source

    Not directly comparable

Instruction following

  • IFEval

    o3-mini93.9%
    Source
    Sakana Fugu-Ultra—

    Not directly comparable

Frequently asked questions

Which is better, o3-mini or Sakana Fugu-Ultra?

At least one model is not scored in the current public ranking lane, so the page does not name an overall quality winner. The page therefore keeps the decision tied to the specific documented workload.

Which is better for coding, o3-mini or Sakana Fugu-Ultra?

The published evidence does not provide a shared weighted coding basis for both models, so BenchLM does not name a coding winner.

Which is better for agentic tasks, o3-mini or Sakana Fugu-Ultra?

The published evidence does not provide a shared weighted agentic tasks basis for both models, so BenchLM does not name a agentic tasks winner.

Which costs less, o3-mini or Sakana Fugu-Ultra?

Both models do not have comparable published API token rates, so this page does not name a universal price winner.

Which has the larger context window, o3-mini or Sakana Fugu-Ultra?

Sakana Fugu-Ultra has the larger documented context window: 1M, compared with 200K.

Related comparisons

Compare API pricing Read the methodology Open the model selector

Last updated August 13, 2026

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