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BenchLM

Mistral Large 3 vs Mistral Medium 3.5 128B

Updated September 29, 2026. Rank says Mistral Medium 3.5 128B is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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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.

Model A
Mistral logo

Mistral

34.09/100

Estimated · Public rank #146

90% interval 8.6–59.5

Model B
Mistral logo

Mistral

36.09/100

Estimated · Public rank #137

90% interval 24.6–47.6

Shared results
0
Mistral Large 3 only
0
Mistral Medium 3.5 128B only
7
Like-for-like categories
0 / 8
Estimated: Mistral Large 3 and Mistral Medium 3.5 128BHow 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

    Mistral Large 3

    Mistral Large 3 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

    Mistral Large 3

    Mistral Large 3 has the lower estimated token cost for this stated workload. Mistral Large 3 has no published cached-input rate, so cached tokens use its listed input rate. Mistral Medium 3.5 128B 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

    Mistral Large 3

    Mistral Large 3 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

    Mistral Medium 3.5 128B is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.

    Confidence: limited
  • Agentic work

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

    Not enough matched evidence

    Mistral Large 3 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

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.

18.4Mistral Large 326.6Mistral Medium 3.5 128B

Directional only · BenchAlign v5.7

Mistral Medium 3.5 128B scores higher, but at least one score rests on Estimated evidence or a different benchmark set. Directional only, no winner.

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.

4 categories rest 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.

A shared-evidence shape is not available.

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

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.7 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.

Agentic

Directional only
Mistral Large 3
17.1
Estimated · #105/117
Mistral Medium 3.5 128B
19.7
Supported · #100/117
Basis
BenchAlign v5.7 lane · 0 vs 3 public rows
Reading
Directional only

Coding

Directional only
Mistral Large 3
18.4
Supported · #132/143
Mistral Medium 3.5 128B
26.6
Estimated · #102/143
Basis
BenchAlign v5.7 lane · 0 vs 2 public rows
Reading
Directional only

Knowledge

Directional only
Mistral Large 3
33.6
Estimated · #122/169
Mistral Medium 3.5 128B
33.6
Supported · #121/169
Basis
BenchAlign v5.7 lane · 0 vs 2 public rows
Reading
Directional only

Instruction following

Directional only
Mistral Large 3
40.0
#101/124
Mistral Medium 3.5 128B
82.6
#48/124
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Directional only

Reasoning

Not comparable
Mistral Large 3
46.9
Unranked · 2 rankable rows
Mistral Medium 3.5 128B
69.9
Unranked · 2 rankable rows
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Mistral Large 3
43.2
Unranked · 1 rankable row
Mistral Medium 3.5 128B
56.7
Unranked · 1 rankable row
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Mistral Large 3
Not ranked
Mistral Medium 3.5 128B
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Mistral Large 3
Not ranked
Mistral Medium 3.5 128B
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 v5.7) 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

Mistral Large 3
$0.00125
Fits in one request
Mistral Medium 3.5 128B
$0.00525
Fits in one request

Mistral Large 3 has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Mistral Large 3
$0.0295
Fits in one request
Mistral Medium 3.5 128B
$0.0975
Fits in one request

Mistral Large 3 has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

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

Mistral Large 3
$0.125
Fits in one request
Cached input priced at the published list-input rate
Mistral Medium 3.5 128B
$0.405
Fits in one request
Cached input priced at the published list-input rate

Mistral Large 3 has the lower modeled cost

Mistral Large 3 has no published cached-input rate, so cached tokens use its listed input rate. Mistral Medium 3.5 128B 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.

Mistral Large 3

256K

Mistral Medium 3.5 128B

256K

API model ID

Mistral Large 3

Not sourced

Mistral Medium 3.5 128B

Not sourced

Cached-input rate

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

Mistral Large 3

Not published

Mistral Medium 3.5 128B

Not published

Documented inputs

Mistral Large 3

Not sourced

Mistral Medium 3.5 128B

Not sourced

Documented outputs

Mistral Large 3

Not sourced

Mistral Medium 3.5 128B

Not sourced

Provider availability

Mistral Large 3

Not sourced

Mistral Medium 3.5 128B

Not sourced

Reasoning profile

Mistral Large 3

Non-Reasoning

Mistral Medium 3.5 128B

Reasoning

Weight access

Mistral Large 3

Proprietary

Mistral Medium 3.5 128B

Open Weight

License

Mistral Large 3

Proprietary

Mistral Medium 3.5 128B

Open Weight

Release date

Mistral Large 3

2025-12-02

Mistral Medium 3.5 128B

2026-04-29

If you already use one of these models

Deployment change
Both entries list Mistral 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: $0.0295 vs $0.0975. Cache-heavy agent loop: $0.125 vs $0.405.
Context tradeoff
Both models list 256K.
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Mistral Large 3 or Mistral Medium 3.5 128B?

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, Mistral Large 3 or Mistral Medium 3.5 128B?

Mistral Medium 3.5 128B scores higher for coding on the public lane, 26.6 to 18.4. Mistral Medium 3.5 128B is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which is better for agentic tasks, Mistral Large 3 or Mistral Medium 3.5 128B?

Mistral Medium 3.5 128B scores higher for agentic tasks on the public lane, 19.7 to 17.1. Mistral Large 3 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, Mistral Large 3 or Mistral Medium 3.5 128B?

For the stated presets, chat costs $0.00125 on Mistral Large 3 and $0.00525 on Mistral Medium 3.5 128B; repository review costs $0.0295 and $0.0975; the cache-heavy agent loop costs $0.125 and $0.405. Mistral Large 3 has no published cached-input rate, so cached tokens use its listed input rate. Mistral Medium 3.5 128B has no published cached-input rate, so cached tokens use its listed input rate.

Which has the larger context window, Mistral Large 3 or Mistral Medium 3.5 128B?

Both models list the same context window, 256K.

Self-host vs API cost

Estimates at 50,000 req/day · 1000 tokens/req average.

Mistral Large 3
API / mo$1,500
Self-host / mo$9,110
Break-even380M/day
Mistral Medium 3.5 128B
API / mo$6,750
Self-host / moNot listed
Break-even—
Proprietary model — self-hosting not applicable.
Model the full break-even

Benchmark evidence

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

Browse raw public benchmark evidence7 rows

Agentic

  • τ³-bench results

    Mistral Large 3—
    Mistral Medium 3.5 128B91.4%
    Source

    Not directly comparable

  • Gert Labs

    Mistral Large 3—
    Mistral Medium 3.5 128B39.10%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Mistral Large 3—
    Mistral Medium 3.5 128B39.0%
    Source

    Not directly comparable

Coding

  • SWE-bench Verified

    Mistral Large 3—
    Mistral Medium 3.5 128B77.6%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    Mistral Large 3—
    Mistral Medium 3.5 128B66.4%
    Source

    Not directly comparable

Knowledge

  • GPQA Diamond (Vals)

    Mistral Large 3—
    Mistral Medium 3.5 128B34.8%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    Mistral Large 3—
    Mistral Medium 3.5 128B75.3%
    Source

    Not directly comparable

7 public results · 0 shared

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Last updated September 29, 2026