Anthropic: Claude Haiku 4.5 (batch) vs Mistral: Mistral Medium 3.5 (batch)
Neither wins outright: Anthropic: Claude Haiku 4.5 (batch) is the pick when cost matters at scale, Mistral: Mistral Medium 3.5 (batch) when you need seed (reproducible sampling).
Monthly cost at list price for five common workloads. Token counts per unit are stated so you can scale them to your own traffic. A workload that does not fit a model's context window is marked rather than priced.
Workload (per month)
Anthropic: Claude Haiku 4.5 (batch)
Mistral: Mistral Medium 3.5 (batch)
Difference
Customer-support chatbot
50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens)
$87.50
$131
Anthropic: Claude Haiku 4.5 (batch) saves $43.75
RAG search over documents
20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens)
$85.00
$127
Anthropic: Claude Haiku 4.5 (batch) saves $42.50
Coding / tool-using agent
2,000 tasks — each a multi-step task with tool calls and file context (60,000 in / 6,000 out tokens)
$90.00
$135
Anthropic: Claude Haiku 4.5 (batch) saves $45.00
Batch summarisation
10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens)
$55.00
$82.50
Anthropic: Claude Haiku 4.5 (batch) saves $27.50
Long-document analysis
500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens)
$27.50
$41.25
Anthropic: Claude Haiku 4.5 (batch) saves $13.75
Capabilities side by side
Capability
Anthropic: Claude Haiku 4.5 (batch)
Mistral: Mistral Medium 3.5 (batch)
What it lets you do
Tool / function calling
✓ Yes
✓ Yes
call your APIs and run agent loops
Structured output (JSON schema)
✓ Yes
✓ Yes
return JSON that validates against your schema
Reasoning / thinking mode
✓ Yes
✓ Yes
spend extra tokens thinking before answering hard problems
Image input
✓ Yes
✓ Yes
read screenshots, charts and scanned pages
Audio input
—
—
take speech or audio directly
File / PDF input
✓ Yes
✓ Yes
accept documents without your own parsing step
Image output
—
—
generate images, not just text
Built-in web search
✓ Yes
—
answer from live web results
Seed (reproducible sampling)
—
✓ Yes
repeat a generation for tests and evals
Log-probabilities
—
—
read token confidence for classification and scoring
From each model's published parameters and input/output types. “—” means not advertised, not proven absent.
Price history
Anthropic: Claude Haiku 4.5 (batch): price unchanged since we started tracking it on 2026-08-07.
Mistral: Mistral Medium 3.5 (batch): price unchanged since we started tracking it on 2026-08-29.
Which should you choose?
Choose Anthropic: Claude Haiku 4.5 (batch) if…
cost matters at scale — it is 33% cheaper on a typical 3:1 input/output mix ($87.50 vs $131 a month for 50,000 support chats)
you need built-in web search — to answer from live web results; Mistral: Mistral Medium 3.5 (batch) does not advertise it
Choose Mistral: Mistral Medium 3.5 (batch) if…
you need seed (reproducible sampling) — to repeat a generation for tests and evals; Anthropic: Claude Haiku 4.5 (batch) does not advertise it
you generate long outputs in one go — up to 210K tokens (about 157,300 words) per response
you want the newer model — released 2026-04-30, 7 months after the other
Frequently asked questions
Is Anthropic: Claude Haiku 4.5 (batch) better than Mistral: Mistral Medium 3.5 (batch)?
Neither wins outright: Anthropic: Claude Haiku 4.5 (batch) is the pick when cost matters at scale, Mistral: Mistral Medium 3.5 (batch) when you need seed (reproducible sampling). In short: Anthropic: Claude Haiku 4.5 (batch) when cost matters at scale, you need built-in web search; Mistral: Mistral Medium 3.5 (batch) when you need seed (reproducible sampling), you generate long outputs in one go, you want the newer model.
Which is cheaper, Anthropic: Claude Haiku 4.5 (batch) or Mistral: Mistral Medium 3.5 (batch)?
Anthropic: Claude Haiku 4.5 (batch) is cheaper: $1.00 vs $1.50 per 1M tokens at a typical 3:1 input/output mix, 33% less. For 50,000 support conversations a month that is $87.50 against $131.
How much do Anthropic: Claude Haiku 4.5 (batch) and Mistral: Mistral Medium 3.5 (batch) cost per million tokens?
Anthropic: Claude Haiku 4.5 (batch) costs $0.50 per 1M input tokens and $2.50 per 1M output tokens; Mistral: Mistral Medium 3.5 (batch) costs $0.75 input and $3.75 output. Output tokens are billed separately, so long answers shift the gap.
Which has the bigger context window, Anthropic: Claude Haiku 4.5 (batch) or Mistral: Mistral Medium 3.5 (batch)?
Mistral: Mistral Medium 3.5 (batch): 262K tokens, about 393 pages, against 200K (about 300 pages) for Anthropic: Claude Haiku 4.5 (batch).
Do Anthropic: Claude Haiku 4.5 (batch) and Mistral: Mistral Medium 3.5 (batch) support function calling and JSON output?
Tool calling — Anthropic: Claude Haiku 4.5 (batch): yes, Mistral: Mistral Medium 3.5 (batch): yes. JSON-schema structured output — Anthropic: Claude Haiku 4.5 (batch): yes, Mistral: Mistral Medium 3.5 (batch): yes.
Can Anthropic: Claude Haiku 4.5 (batch) or Mistral: Mistral Medium 3.5 (batch) read images?
Yes, both accept image input.
Is Anthropic: Claude Haiku 4.5 (batch) or Mistral: Mistral Medium 3.5 (batch) free to use?
No free variant is listed for either; both are pay-per-token.
What is the maximum output length of Anthropic: Claude Haiku 4.5 (batch) and Mistral: Mistral Medium 3.5 (batch)?
Anthropic: Claude Haiku 4.5 (batch) can write up to 64K tokens (about 48,000 words) per response; Mistral: Mistral Medium 3.5 (batch) up to 210K (about 157,300 words).
When were Anthropic: Claude Haiku 4.5 (batch) and Mistral: Mistral Medium 3.5 (batch) released?
Anthropic: Claude Haiku 4.5 (batch) was listed on 2025-10-15; Mistral: Mistral Medium 3.5 (batch) on 2026-04-30.
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance...
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...