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Mistral Medium 3.5 mistralai
Release timeline
Stages observed by the nightly radar: announced → API only → weights public → served by third parties. Each entry carries the source it was seen at.
- 2026-04-30 · API only source seeded from the earliest dated observation when first seen · observed 2026-10-07 20:20 UTC
Description
Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, and complex...
via OpenRouter listing · observed 2026-10-24 21:26 UTC. The listing text is the provider's own description, not an assessment.
Where to run 2 providers · 4 endpoints
Hosted endpoints observed for Mistral Medium 3.5, sorted by input price (USD per million tokens). Each row names its observer and date; prices change daily, so check the source before quoting. Cheapest observed input price: $1.50/M.
| Provider | Model ref | Context | Quant | $/M in | $/M out | tok/s | TTFT | Tools | Status | Observed |
|---|---|---|---|---|---|---|---|---|---|---|
| Mistral openrouter | mistralai/mistral-medium-3-5 | 256K | unknown | $1.50 | $7.50 | — | — | yes | live | 2026-10-24 |
| Mistral openrouter | mistralai/mistral-medium-3-5 | 256K | unknown | $1.50 | $7.50 | — | — | yes | live | 2026-10-24 |
| Mistral openrouter | mistralai/mistral-medium-3-5 | 256K | unknown | $1.65 | $8.25 | — | — | yes | live | 2026-10-24 |
| Mistral (first-party) mistral-api | mistral-medium-3-5 | 256K | — | — | — | — | — | — | live | 2026-10-24 |
No third-party providers observed beyond the lab's own endpoints.
Facts
| Context length | 262,144 tokens (256K) · OpenRouter listing |
|---|---|
| Modalities | text + image + file → text |
| Max completion tokens | 209,715 |
| Lab API ids | Mistral: mistral-medium-3-5, mistral-medium-3.5 |
| Supported parameters | frequency_penalty, include_reasoning, max_tokens, presence_penalty, reasoning, reasoning_effort, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_p |
| Openness | Weights pending · open-weights lab, name matches an open line, no public HF repo (unknown) |
| Stage | API only |
| Confidence | medium |
| Pricing (USD per M tokens) |
in $1.50 · out $7.50 OpenRouter list price (cheapest live endpoint) · source · observed 2026-10-24 21:26 UTC |
Open alternatives 5
Nearest open-weights models by modality, context and price on this watch list. Not a quality ranking.
| Model | Org | Params | Context | $/M in | License | Why it is here |
|---|---|---|---|---|---|---|
| Qwen3.5-4B | Qwen | 4.66B | 256K | — | apache-2.0 | similar context (262K), vision input |
| Kimi-K2.6 | moonshotai | 1.03T | 256K | $0.45 | other | similar context (262K), cheaper input price ($0.44935/M vs $1.5/M), vision input |
| Qwen3.5-397B-A17B | Qwen | 403B | 256K | $0.39 | apache-2.0 | similar context (262K), cheaper input price ($0.39/M vs $1.5/M), vision input |
| Kimi-K2.5 | moonshotai | 1.03T | 256K | $0.45 | other | similar context (262K), cheaper input price ($0.45/M vs $1.5/M), vision input |
| Qwen3-VL-4B-Instruct | Qwen | 4.44B | 256K | — | apache-2.0 | similar context (262K), vision input |
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Sources
- openrouter mistralai/mistral-medium-3-5 · observed 2026-10-24 21:26 UTC
- mistral mistral-medium-3-5 · observed 2026-10-24 21:26 UTC
Radar run: 2026-10-25 06:51 UTC · Last verified 2026-10-25 06:51 UTC