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GPT-4.1 vs Inkling

Updated October 14, 2026. Rank says Inkling is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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Decision reading

Inkling has the higher public score estimate, 52.13 versus 37.38, but the 90% score intervals overlap. Treat that as a lead, not a settled winner. 3 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

Model A
OpenAI logo

OpenAI

37.38/100

Supported · Public rank #142

90% interval 21.5–53.2

Model B
Thinking Machines Lab logo

Thinking Machines Lab

52.13/100

Supported · Public rank #85

90% interval 41.7–62.5

Shared results
3
GPT-4.1 only
4
Inkling only
21
Like-for-like categories
1 / 8
Supported: GPT-4.1 and InklingHow the comparison works

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

    Inkling

    Inkling 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

    Inkling

    Inkling has the lower estimated token cost for this stated workload. GPT-4.1 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

    Inkling

    Inkling 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

    GPT-4.1 is not ranked on the public lane for coding, so no winner is named for coding.

    Confidence: limited
  • Agentic work

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

    Not enough matched evidence

    GPT-4.1 is not ranked on the public lane for agentic, so no winner is named for agentic.

    Confidence: limited
  • Long documents

    Prompts that approach the documented context limit

    No clear pick

    The documented context windows are equal.

    Confidence: documented

Which one for a specific job

Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.

The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.

—GPT-4.134.0Inkling

Not comparable · BenchAlign v5.8

The coding row is not comparable on the public lane: at least one model is not measured or not ranked there.

Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.

Same basis rules as the category table below

What is actually comparable

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

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

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.

Bars run 0–100 on each benchmark’s normalized display scale

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.8 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.

Knowledge

Like-for-like
GPT-4.1
35.8
Supported · #131/181
Inkling
54.5
Supported · #62/181
Basis
BenchAlign v5.8 lane · 2 vs 6 public rows
Reading
Inkling leads · intervals overlap

Instruction following

Directional only
GPT-4.1
50.3
#83/128
Inkling
87.6
#35/128
Basis
Provisional lane · 0 vs 1 weighted rows
Reading
Directional only

Agentic

Not comparable
GPT-4.1
Not ranked
Inkling
36.2
Supported · #72/124
Basis
BenchAlign v5.8 lane · 1 vs 5 public rows
Reading
Not comparable

Coding

Not comparable
GPT-4.1
Not ranked
Inkling
34.0
Supported · #80/149
Basis
BenchAlign v5.8 lane · 1 vs 6 public rows
Reading
Not comparable

Reasoning

Not comparable
GPT-4.1
72.8
Unranked · 2 rankable rows
Inkling
79.0
#14/29
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
GPT-4.1
54.7
Unranked · 1 rankable row
Inkling
67.5
#35/54
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Multilingual

Not comparable
GPT-4.1
61.5
#14/17
Inkling
Not ranked
Basis
Provisional lane · 1 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
GPT-4.1
27.0
Unranked · 1 rankable row
Inkling
58.3
#11/12
Basis
Provisional lane · 1 vs 3 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign v5.8) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Supported evidence per lane · bars run 0–100Methodology

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
$0.006
Fits in one request
Inkling
$0.00421
Fits in one request

Inkling has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

GPT-4.1
$0.124
Fits in one request
Inkling
$0.10754
Fits in one request

Inkling 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
$0.52
Fits in one request
Cached input priced at the published list-input rate
Inkling
$0.159
Fits in one request

Inkling has the lower modeled cost

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

Cached input falls back to the list input rate only where a cached rate is unpublished

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

1M

Inkling

1M

API model ID

GPT-4.1

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

Not published

Inkling

$0.374 per 1M cached input tokens

Documented inputs

GPT-4.1

Not sourced

Inkling

Not sourced

Documented outputs

GPT-4.1

Not sourced

Inkling

Not sourced

Provider availability

GPT-4.1

Not sourced

Inkling

Not sourced

Reasoning profile

GPT-4.1

Non-Reasoning

Inkling

Hybrid

Weight access

GPT-4.1

Proprietary

Inkling

Open Weight

License

GPT-4.1

Proprietary

Inkling

Open Weight

Release date

GPT-4.1

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 estimate, 52.13 versus 37.38, but the 90% score intervals overlap.
Workload cost
Repository review: $0.124 vs $0.10754. Cache-heavy agent loop: $0.52 vs $0.159.
Context tradeoff
Both models list 1M.
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, GPT-4.1 or Inkling?

Inkling has the higher public score estimate, 52.13 versus 37.38, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.

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

GPT-4.1 is not ranked on the public lane for coding, so no winner is named for coding.

Which is better for agentic tasks, GPT-4.1 or Inkling?

GPT-4.1 is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.

Which costs less, GPT-4.1 or Inkling?

For the stated presets, chat costs $0.006 on GPT-4.1 and $0.00421 on Inkling; repository review costs $0.124 and $0.10754; the cache-heavy agent loop costs $0.52 and $0.159. GPT-4.1 has no published cached-input rate, so cached tokens use its listed input rate.

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

Both models list the same context window, 1M.

Benchmark evidence

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

Browse raw public benchmark evidence28 rows

Agentic

  • Gert Labs

    GPT-4.125.65%
    Source
    Inkling—

    Not directly comparable

  • Terminal-Bench 2.1

    GPT-4.1—
    Inkling63.8%
    Source

    Not directly comparable

  • BrowseComp

    GPT-4.1—
    Inkling77.1%
    Source

    Not directly comparable

  • MCP Atlas

    GPT-4.1—
    Inkling74.1%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    GPT-4.1—
    Inkling47.6%
    Source

    Not directly comparable

  • CWE-bench v1

    GPT-4.1—
    Inkling37.0%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    GPT-4.154.6%
    Source
    Inkling77.6%
    Source

    Inkling leads this result

  • SWE-bench Pro

    GPT-4.1—
    Inkling54.3%
    Source

    Not directly comparable

  • Terminal-Bench 2.1

    GPT-4.1—
    Inkling63.8%
    Source

    Not directly comparable

  • FrontierSWE v2

    GPT-4.1—
    Inkling4.1%
    Source

    Not directly comparable

  • LiveCodeBench (Vals)

    GPT-4.1—
    Inkling85.5%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    GPT-4.1—
    Inkling77.6%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    GPT-4.1—
    Inkling73.5%
    Source

    Not directly comparable

  • CharXiv

    GPT-4.1—
    Inkling82%
    Source

    Not directly comparable

  • CharXiv w/o tools

    GPT-4.1—
    Inkling78.1%
    Source

    Not directly comparable

Knowledge

  • MMLU

    GPT-4.190.2%
    Source
    Inkling—

    Not directly comparable

  • GPQA

    GPT-4.166.3%
    Source
    Inkling87.9%
    Source

    Inkling leads this result

  • GPQA-D

    GPT-4.1—
    Inkling87.9%
    Source

    Not directly comparable

  • HLE

    GPT-4.1—
    Inkling46%
    Source

    Not directly comparable

  • HLE w/o tools

    GPT-4.1—
    Inkling30%
    Source

    Not directly comparable

  • GPQA Diamond (Vals)

    GPT-4.1—
    Inkling87.1%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    GPT-4.1—
    Inkling86.3%
    Source

    Not directly comparable

Multilingual

  • MMLU-ProX

    GPT-4.172.7%
    Source
    Inkling—

    Not directly comparable

Instruction following

  • IFEval

    GPT-4.187.4%
    Source
    Inkling—

    Not directly comparable

  • IFBench

    GPT-4.1—
    Inkling79.8%
    Source

    Not directly comparable

Math

  • FrontierMath v2 (Tiers 1-3)

    Shared source
    GPT-4.15.965%
    Inkling33.333%

    Inkling leads this result

  • AIME26

    GPT-4.1—
    Inkling97.1%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    GPT-4.1—
    Inkling4.878%
    Source

    Not directly comparable

28 public results · 3 shared

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Last updated October 14, 2026