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Model A
GPT-4.1 nano

OpenAI

42.43/100

Estimated · Public rank #186

90% interval 30.9–53.9

GPT-4.1 nano vs Inkling

Updated August 29, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

Thinking Machines Lab logo
Model B
Inkling

Thinking Machines Lab

67.02/100

Supported · Public rank #31

90% interval 60.0–74.0

Decision reading

Inkling has the higher public score, 67.02 versus 42.43, and the 90% score intervals do not overlap.

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.

  • Chat turn cost

    1K fresh input + 500 output tokens

    GPT-4.1 nano

    GPT-4.1 nano 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

    GPT-4.1 nano

    GPT-4.1 nano has the lower estimated token cost for this stated workload. GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input rate.

    Confidence: rate-fallback

Show secondary and unsupported calls
  • Repository review cost

    50K fresh input + 3K output tokens

    GPT-4.1 nano

    GPT-4.1 nano has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates

  • 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

  • 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
1
GPT-4.1 nano only
3
Inkling only
14
Like-for-like categories
0 / 8

1 category uses different evidence sets. Those rows remain visible for coverage context but do not name a winner.

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

Directional only
GPT-4.1 nano
50.3
Inkling
51.6
Weighted basis
1 vs 2 rows
Reading
Directional only

Agentic

Not comparable
GPT-4.1 nano
Not measured
Inkling
69.4
Weighted basis
0 vs 2 rows
Reading
Not comparable

Coding

Not comparable
GPT-4.1 nano
Not measured
Inkling
68.6
Weighted basis
0 vs 2 rows
Reading
Not comparable

Reasoning

Not comparable
GPT-4.1 nano
Not measured
Inkling
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Math

Not comparable
GPT-4.1 nano
1.0
Inkling
97.1
Weighted basis
1 vs 1 rows
Reading
Not comparable

Multilingual

Not comparable
GPT-4.1 nano
Not measured
Inkling
Not measured
Weighted basis
0 vs 0 rows
Reading
Not comparable

Multimodal

Not comparable
GPT-4.1 nano
Not measured
Inkling
76.5
Weighted basis
0 vs 2 rows
Reading
Not comparable

Instruction following

Not comparable
GPT-4.1 nano
83.2
Inkling
79.8
Weighted basis
1 vs 1 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

GPT-4.1 nano
$0.0003
Fits in one request
Inkling
$0.00421
Fits in one request

GPT-4.1 nano has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

GPT-4.1 nano
$0.0062
Fits in one request
Inkling
$0.10754
Fits in one request

GPT-4.1 nano has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

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

GPT-4.1 nano
$0.026
Fits in one request
Cached input priced at the published list-input rate
Inkling
$0.159
Fits in one request

GPT-4.1 nano has the lower modeled cost

GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input 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.

GPT-4.1 nano

1M

Inkling

1M

API model ID

GPT-4.1 nano

Not sourced

Inkling

Not sourced

Cached-input rate

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

GPT-4.1 nano

Not published

Inkling

$0.374 per 1M cached input tokens

Documented inputs

GPT-4.1 nano

Not sourced

Inkling

Not sourced

Documented outputs

GPT-4.1 nano

Not sourced

Inkling

Not sourced

Provider availability

GPT-4.1 nano

Not sourced

Inkling

Not sourced

Reasoning profile

GPT-4.1 nano

Non-Reasoning

Inkling

Hybrid

Weight access

GPT-4.1 nano

Proprietary

Inkling

Open Weight

License

GPT-4.1 nano

Proprietary

Inkling

Open Weight

Release date

GPT-4.1 nano

2025-04-14

Inkling

2026-07-15

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
Inkling has the higher public score, 67.02 versus 42.43, and the 90% score intervals do not overlap.
Workload cost
Repository review: $0.0062 vs $0.10754. Cache-heavy agent loop: $0.026 vs $0.159.
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 evidence18 rows

Agentic

  • Terminal-Bench 2.0

    GPT-4.1 nano
    Inkling63.8%
    Source

    Not directly comparable

  • BrowseComp

    GPT-4.1 nano
    Inkling77.1%
    Source

    Not directly comparable

  • MCP Atlas

    GPT-4.1 nano
    Inkling74.1%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    GPT-4.1 nano
    Inkling77.6%
    Source

    Not directly comparable

  • SWE-bench Pro

    GPT-4.1 nano
    Inkling54.3%
    Source

    Not directly comparable

  • Terminal-Bench 2.0

    GPT-4.1 nano
    Inkling63.8%
    Source

    Not directly comparable

Knowledge

  • MMLU

    GPT-4.1 nano80.1%
    Source
    Inkling

    Not directly comparable

  • GPQA

    GPT-4.1 nano50.3%
    Source
    Inkling87.9%
    Source

    Inkling leads this result

  • GPQA-D

    GPT-4.1 nano
    Inkling87.9%
    Source

    Not directly comparable

  • HLE

    GPT-4.1 nano
    Inkling46%
    Source

    Not directly comparable

  • HLE w/o tools

    GPT-4.1 nano
    Inkling30%
    Source

    Not directly comparable

Math

  • FrontierMath v2 (Tiers 1-3)

    GPT-4.1 nano1.034%
    Source
    Inkling

    Not directly comparable

  • AIME26

    GPT-4.1 nano
    Inkling97.1%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    GPT-4.1 nano
    Inkling73.5%
    Source

    Not directly comparable

  • CharXiv

    GPT-4.1 nano
    Inkling82%
    Source

    Not directly comparable

  • CharXiv w/o tools

    GPT-4.1 nano
    Inkling78.1%
    Source

    Not directly comparable

Instruction following

  • IFEval

    GPT-4.1 nano83.2%
    Source
    Inkling

    Not directly comparable

  • IFBench

    GPT-4.1 nano
    Inkling79.8%
    Source

    Not directly comparable

Frequently asked questions

Which is better, GPT-4.1 nano or Inkling?

Inkling has the higher public score, 67.02 versus 42.43, and the 90% score intervals do not overlap. That is the clearest overall quality signal in the current public data.

Which is better for coding, GPT-4.1 nano or Inkling?

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, GPT-4.1 nano or Inkling?

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, GPT-4.1 nano or Inkling?

For the stated presets, chat costs $0.0003 on GPT-4.1 nano and $0.00421 on Inkling; repository review costs $0.0062 and $0.10754; the cache-heavy agent loop costs $0.026 and $0.159. GPT-4.1 nano has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, GPT-4.1 nano or Inkling?

Both models list the same context window, 1M.

Related comparisons

Last updated August 29, 2026

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