Agentic
Not comparable- Mistral Medium 3.5 128B
- 21.9
- Supported · #150/152
- o1-pro
- Not ranked
- Basis
- BenchAlign lane · 3 vs 0 public rows
- Reading
- Not comparable
Mistral Medium 3.5 128B vs o1-pro
Updated September 10, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
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.
Share or export
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
Mistral Medium 3.5 128B
Mistral Medium 3.5 128B has the larger documented context window.
Confidence: documented
Chat turn cost
1K fresh input + 500 output tokens
Mistral Medium 3.5 128B
Mistral Medium 3.5 128B 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
Mistral Medium 3.5 128B
Mistral Medium 3.5 128B 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
O1-pro 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
O1-pro is not ranked on the public lane for agentic, so no winner is named for agentic.
Confidence: limited
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. o1-pro does not fit this workload in one request. Mistral Medium 3.5 128B has no published cached-input rate, so cached tokens use its listed input rate. o1-pro has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
7 Mistral Medium 3.5 128B only
1 o1-pro only
- Shared results
- 0
- Mistral Medium 3.5 128B only
- 7
- o1-pro only
- 1
- Like-for-like categories
- 0 / 8
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
Not comparable- Mistral Medium 3.5 128B
- 36.9
- Estimated · #127/151
- o1-pro
- Not ranked
- Basis
- BenchAlign lane · 2 vs 0 public rows
- Reading
- Not comparable
Reasoning
Not comparable- Mistral Medium 3.5 128B
- 68.6
- Unranked · 2 rankable rows
- o1-pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Knowledge
Not comparable- Mistral Medium 3.5 128B
- 39.0
- Supported · #140/183
- o1-pro
- Not ranked
- Basis
- BenchAlign lane · 2 vs 1 public rows
- Reading
- Not comparable
Math
Not comparable- Mistral Medium 3.5 128B
- Not ranked
- o1-pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multilingual
Not comparable- Mistral Medium 3.5 128B
- Not ranked
- o1-pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Multimodal
Not comparable- Mistral Medium 3.5 128B
- 55.6
- Unranked · 1 rankable row
- o1-pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
Instruction following
Not comparable- Mistral Medium 3.5 128B
- 84.0
- #48/123
- o1-pro
- Not ranked
- Basis
- Provisional lane · 0 vs 0 weighted rows
- Reading
- Not comparable
| Category | Mistral Medium 3.5 128B | o1-pro | Basis | Reading |
|---|---|---|---|---|
| Agentic | 21.9Supported · #150/152 | Not ranked | Not comparableBenchAlign lane · 3 vs 0 public rows | Not comparable |
| Coding | 36.9Estimated · #127/151 | Not ranked | Not comparableBenchAlign lane · 2 vs 0 public rows | Not comparable |
| Reasoning | 68.6Unranked · 2 rankable rows | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Knowledge | 39.0Supported · #140/183 | Not ranked | Not comparableBenchAlign lane · 2 vs 1 public rows | Not comparable |
| Math | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multilingual | Not ranked | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Multimodal | 55.6Unranked · 1 rankable row | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | Not comparable |
| Instruction following | 84.0#48/123 | Not ranked | Not comparableProvisional lane · 0 vs 0 weighted rows | 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
- Mistral Medium 3.5 128B
- $0.00525
- Fits in one request
- o1-pro
- $0.45
- Fits in one request
Mistral Medium 3.5 128B has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- Mistral Medium 3.5 128B
- $0.0975
- Fits in one request
- o1-pro
- $9.30
- Fits in one request
Mistral Medium 3.5 128B 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 Medium 3.5 128B
- $0.405
- Fits in one request
- Cached input priced at the published list-input rate
- o1-pro
- $39.00
- Does not fit in one request
- Cached input priced at the published list-input rate
o1-pro does not fit this workload in one request. Mistral Medium 3.5 128B has no published cached-input rate, so cached tokens use its listed input rate. o1-pro 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.
SpecificationMistral Medium 3.5 128Bo1-pro
Context window
Maximum documented context; output-token limits may be lower.
Mistral Medium 3.5 128B
256K
o1-pro
200K
API model ID
Mistral Medium 3.5 128B
Not sourced
o1-pro
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
Mistral Medium 3.5 128B
Not published
o1-pro
Not published
Documented inputs
Mistral Medium 3.5 128B
Not sourced
o1-pro
Not sourced
Documented outputs
Mistral Medium 3.5 128B
Not sourced
o1-pro
Not sourced
Provider availability
Mistral Medium 3.5 128B
Not sourced
o1-pro
Not sourced
Reasoning profile
Mistral Medium 3.5 128B
Reasoning
o1-pro
Reasoning
Weight access
Mistral Medium 3.5 128B
Open Weight
o1-pro
Proprietary
License
Mistral Medium 3.5 128B
Open Weight
o1-pro
Proprietary
Release date
Mistral Medium 3.5 128B
2026-04-29
o1-pro
2024-12-01
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
- The public evidence has no benchmark result shared by both models, so it does not support a quality verdict.
- Workload cost
- Repository review: $0.0975 vs $9.30. Cache-heavy agent loop: $0.405 vs $39.00.
- Context tradeoff
- Mistral Medium 3.5 128B has the larger documented window (256K).
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 evidence8 rows
Agentic
Coding
Knowledge
Frequently asked questions
Which is better, Mistral Medium 3.5 128B or o1-pro?
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 Medium 3.5 128B or o1-pro?
O1-pro is not ranked on the public lane for coding, so no winner is named for coding.
Which is better for agentic tasks, Mistral Medium 3.5 128B or o1-pro?
O1-pro is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.
Which costs less, Mistral Medium 3.5 128B or o1-pro?
For the stated presets, chat costs $0.00525 on Mistral Medium 3.5 128B and $0.45 on o1-pro; repository review costs $0.0975 and $9.30; the cache-heavy agent loop costs $0.405 and $39.00. o1-pro does not fit this workload in one request. Mistral Medium 3.5 128B has no published cached-input rate, so cached tokens use its listed input rate. o1-pro has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, Mistral Medium 3.5 128B or o1-pro?
Mistral Medium 3.5 128B has the larger documented context window: 256K, compared with 200K.
Related comparisons
Last updated September 10, 2026
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