Migrating from mistral-medium-2508 to mistral-medium-3-5

What changes when you move from mistral-medium-2508 to mistral-medium-3-5: input price +275%, output price +275%, context window 128,000 → 256,000 tokens.

From: mistral-medium-2508
Status: Retired
Shutdown: Aug 31, 2026
Time left: —

To: mistral-medium-3-5
Status: Active
Shutdown: none announced
Time left: —

Prices

USD per 1M tokens, standard tier

Type	mistral-medium-2508	mistral-medium-3-5	Change
Input	$0.40first seen October 5, 2026 · source	$1.50first seen October 5, 2026 · source	+275%
Output	$2.00first seen October 5, 2026 · source	$7.50first seen October 5, 2026 · source	+275%

At 1M input and 250K output tokens a month: $0.90 on mistral-medium-2508, $3.375 on mistral-medium-3-5 (+275%).

Other tiers, prompt-size bands and modalities are on each model's page.

Limits

Tokens

Limit	mistral-medium-2508	mistral-medium-3-5	Change
Context window	128,000 tokensin place when tracking began (October 6, 2026) · source	256,000 tokensin place when tracking began (October 6, 2026) · source	+100%
Max output tokens	Not published	Not published	—

Benchmarks

Same benchmark, source and setting on both sides

Benchmark	mistral-medium-2508	mistral-medium-3-5	Change
Arena TextArena. Ranges don't overlap.	1408 ±3	1427 ±6	+19
Arena Text: CodingArena. Ranges don't overlap.	1454 ±5	1478 ±11	+24
Arena VisionArena. Ranges don't overlap.	1159 ±6	1200 ±10	+41

A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Arena (arena.ai), CC BY 4.0.

Features and parameters

Compare models

Same on both

Structured outputs: supported on both.mistral-medium-2508: in place when tracking began (October 6, 2026) · source · mistral-medium-3-5: in place when tracking began (October 6, 2026) · source
Function calling: supported on both.mistral-medium-2508: in place when tracking began (October 6, 2026) · source · mistral-medium-3-5: in place when tracking began (October 6, 2026) · source
Batch API: supported on both.mistral-medium-2508: in place when tracking began (October 6, 2026) · source · mistral-medium-3-5: in place when tracking began (October 6, 2026) · source
Image input: supported on both.mistral-medium-2508: in place when tracking began (October 6, 2026) · source · mistral-medium-3-5: in place when tracking began (October 6, 2026) · source
PDF input: supported on both.mistral-medium-2508: in place when tracking began (October 6, 2026) · source · mistral-medium-3-5: in place when tracking began (October 6, 2026) · source

Not published for mistral-medium-2508: Prompt caching, Reasoning / thinking, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs, Max output tokens.

Not published for mistral-medium-3-5: Prompt caching, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs, Max output tokens.

Aliases

All aliases

No aliases point at mistral-medium-2508.

Aliases pointing at mistral-medium-3-5: mistral-medium-latest (in place when tracking began (October 6, 2026) · source)

Checklist

Change the model string from mistral-medium-2508 to mistral-medium-3-5.
Re-check costs: mistral-medium-3-5 costs more than mistral-medium-2508 (input +275%, output +275%).

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: mistral-medium-2508, mistral-medium-3-5.