Head to head · LLM inference · October 2026 research run

Amazon Bedrock vs Mistral AI API

Amazon Bedrock scores 81.7 (A) on agent readiness against Mistral AI API's 65.7 (B), and leads in 6 of 7 scored categories. Mistral AI API leads on payments & pricing. Both do llm inference.

Best model APIs and inference for AI agents · All 830 models comparisons

Which one, for what

Amazon Bedrock A

Best for Teams already on AWS who want Claude, GPT-6, Nova, Llama and other models under one IAM, billing and VPC boundary, with regional data controls and an SLA.

Ahead on

  • Reliability, 80 against 50
  • Security & auth, 98 against 73
  • Transparency & trust, 85 against 80

Also in its favour

  • Agent-ready, a grade of BB or better
  • No incidents deducted, where Mistral AI API loses 6 points for them

Watch for

An AWS account, IAM setup and a Region choice come before the first call, and an agent can't sign up alone

Mistral AI API B

Best for Teams that need EU processing, open-weight models they can later run themselves, or an API an agent can read from an OpenAPI file.

Ahead on

  • Payments & pricing, 40 against 30

Watch for

Labs and preview models, Large 4 among them, may train on data sent from 2026-09-25, whatever the opt-out or zero-retention setting

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Reliability Amazon Bedrock +30

Amazon Bedrock 80

AWS Health Dashboard with per-service, per-Region feeds and a public history file (20). The history lists Amazon Bedrock as disrupted in ME-CENTRAL-1 (UAE) and ME-SOUTH-1 (Bahrain) since March 2026, where AWS said on 15 September 2026 (still inside the 90-day window on 6 November) that it can't restore resources held only there. No other Bedrock event appears in the history in the 90 days to 6 November; an EU-SOUTH-2 packet-loss event on 4 October named Bedrock AgentCore, not Bedrock. This counts as one major event (10). StatusGator's third-party mirror shows 'Increased Error Rates' warnings on 24, 26 and 27 August and 10 September that we couldn't find in AWS's own history, so we didn't score them. Per-model token quotas with default values in the AWS General Reference, such as 30,000,000 tokens a minute for Opus 5.5 global inference (15). The error guide gives exponential backoff with jitter for 429, 503 and 529 and says to honour Retry-After, and the SDKs retry ModelNotReadyException up to five times (15). SLA of 99.9 per cent a month per Region for the model APIs, last updated 4 October 2023 (10). Converse and the current Claude, GPT-6 and Nova 2 Lite models are GA (10).

Mistral AI API 50

Status page at status.mistral.ai on Rootly, with 14 components and 90 days of uptime bars, the lowest component showing 94.36% on 1 October (20). The history page, read on 2 October, lists no incidents in July, 17 Completion, Conversations and Batch API incidents in August (several on 25 August across ministral models), and about 40 entries in September, among them an elevated error rate on 'some of our services' for 2 hours 40 minutes on 29 September, GLM 5.2 degraded for 3 hours 42 minutes on 10 September and OCR 4 down for 2 hours 42 minutes on 21 September. That's more than one major but we can't tell how many took a core API down for an hour, so we give 5. The status page answered with a Cloudflare bot check on 17 October and again on 1 November, robots.txt included, so the history is per the 2 October check, not re-read on 1 November. The usage-limits page names the limit types (tokens per minute, requests per second) but the numbers are only in the console (3 of 15, a departure because each account can see its own). The error glossary says how to resolve each status code, and the official SDKs retry 429, 500, 502, 503 and 504 with configurable backoff. No Retry-After header confirmed (12 of 15). A Priority Tier for queueing exists, no SLA found (0). Chat completions on GA models is GA (10). 20+5+3+12+0+10 = 50.

Security & auth Amazon Bedrock +25

Amazon Bedrock 98

Model reading. IAM with SigV4, roles and STS session credentials, policies down to a model or inference-profile ARN, short-term API keys that expire within 12 hours, long-term keys with expiry and reset, and condition keys that can deny bearer tokens altogether (30). The security page says customer data isn't shared with model providers or used to improve the base models (20). The abuse detection page says Bedrock stores no inputs or outputs by default, and a per-Region none mode blocks models that require retention, but Claude Fable 5 and 5.1 keep all traffic up to 30 days and GPT-6 and GPT-5.x keep flagged traffic up to 30 days (13 of 15, a judgement call; Anthropic's own API got 12 for the same Fable exception without an account-level block). CloudTrail logs API calls, and model invocation logging can send prompts and responses to S3 or CloudWatch Logs (15). Bedrock is in ISO, SOC and CSA STAR Level 2 scope, HIPAA eligible and FedRAMP High in GovCloud (US-West) per its security page, with a vulnerability disclosure programme on HackerOne, and the aws.amazon.com security.txt, expired on 6 October, was renewed with Expires 2027-10-16 when read on 6 November (20). Up from 96 on 6 October for that reason.

Mistral AI API 73

Model reading. Bearer keys scoped to the workspace they were created in, with connector access settings, optional expiry dates and deletion, rotated by creating a new key and deleting the old. Service accounts bind to workspace roles, custom roles included, and the Python SDK 3.0.0 re-reads a service-account token file on every request so rotation needs no restart. Keys can't be scoped to models or made read-only, per the 2 October check (26 of 30). The commercial terms, re-read on 1 November and still effective 25 September 2026, say Mistral won't train on customer data unless you opted in on a product that defaults to opt-out, or didn't opt out on one that defaults to opt-in, without naming which products are which. Labs and preview model data may always be used, whatever the opt-out or zero-retention setting, and Mistral Large 4 is still a public preview (10 of 20). 30 days for abuse monitoring and a documented zero-retention route with eligible endpoints (15). Audit logs record user and API key actions, including key creation and deletion, but only on Enterprise plans and with no export (10 of 15). security.txt re-read on 1 November, with a security@mistral.ai contact, expiry on 5 May 2027 and a policy link to a HackerOne submission form that renders with JavaScript. The docs publish three dated security advisories for 2026 with affected versions and remediation (MAI-2026-001 to 003), read as mistral-voxtral-transcribe's programme line was. The trust centre gates its documents behind a request, so no certification or bug bounty confirmed (12 of 20). 26+10+15+10+12 = 73.

Payments & pricing Mistral AI API +10

Amazon Bedrock 30

No x402, MPP or L402 (0). Per-token prices per model, tier and Region on the public pricing page, filled from AWS's public price feed (20). New accounts get up to $200 in Free Tier credits and the Free Tier page lists Bedrock among eligible services, and the Free Tier FAQ says most new customers don't need a payment method, but AWS may still ask for one, so half, as for S3 (10). A person signs up for AWS in a browser and sets up IAM before any key exists (0).

Mistral AI API 40

No machine payment protocol (0). Per-token prices published without a login, re-read on 1 November. Mistral Large 4 is now listed at $0.70/$2.10 with cached input at $0.07 (the 17 October check read $1.36/$4.18 with a launch sale), and cached input is 10% across the range (20). Timestral has no API price because it isn't served on the API. Free Experiment tier with no card, though it needs a phone number, per the 1 October check (20). Browser sign-up (0). 0+20+20+0 = 40.

Transparency & trust Amazon Bedrock +5

Amazon Bedrock 85

Closed service under the AWS Customer Agreement and Service Terms, with the SDKs and Smithy models under Apache-2.0 (18, as for S3). The data retention, abuse detection and security pages agree that Bedrock stores nothing by default, name the models that retain traffic and for how long, and say retained data isn't shared with providers. The retention page's default mode says AWS 'may retain the data for safety and abuse-prevention purposes' without a period, and a legacy provider_data_share mode is kept though sharing isn't supported (25 of 30). A written lifecycle policy with Legacy and EOL dates per model, but the legacy table's 34-day Legacy periods for five Claude models in some Regions contradict its own 6-month floor (15 of 20, down from 18). AWS's sub-processor list, per the 4 October S3 check, and per-Region, geographic and global inference options, with global routing able to process data in any commercial Region (18 of 20).

Mistral AI API 80

Closed service with clear terms, SDKs Apache-2.0, and several models published as open weights. Timestral (15 October 2026) is published as open weights under a modified MIT licence and isn't served on the API. Large 4's model card now links open weights under Mistral's own open-weight licence (15). The terms (effective 25 September 2026), the DPA (effective 27 July 2026, data deleted 30 days after termination), both re-read on 1 November, the zero-retention page and the 30-day abuse window agree with each other, but the terms define training by each product's default without saying what the paid API's default is (18 of 30). Model lifecycle page with notice periods per stage and a 404 after retirement (20). The DPA points to a subprocessor list at trust.mistral.ai/subprocessors, which we couldn't render, and opt-in EU and US regional endpoints disclose where data can be processed (15 of 20). 15+18+20+15 = 68.

Score by category

CategoryWeight this runAmazon BedrockMistral AI APIEdge
Reliability16%208050Amazon Bedrock +30
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29493Amazon Bedrock +1
Agent ergonomics13%16.29291Amazon Bedrock +1
Security & auth14%17.59873Amazon Bedrock +25
Payments & pricing10%12.53040Mistral AI API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88180Amazon Bedrock +1
Transparency & trust7%8.88580Amazon Bedrock +5
Negative events≤150-6
TotalA 81.7/100B 65.7/100

Facts side by side

FactAmazon BedrockMistral AI API
KindModel APIModel API
VendorAmazon Web ServicesMistral AI
Hosted endpointhttps://bedrock-runtime.us-east-1.amazonaws.comhttps://api.mistral.ai/v1
TransportsHTTPHTTP
AuthOAuth or keyAPI key
PricingPay per useFreemium
x402nono
LicenceProprietary service under the AWS Customer Agreement and Service Terms. Third-party models carry their providers' licence terms. The AWS SDKs and the Smithy service models are Apache-2.0Apache-2.0 (SDKs)
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-302026-10-28
Terms last updated2026-10-012026-09-25
Privacy policy last updated2026-05-182026-09-03
Customer content may train modelsyes, with an opt-outyes, with an opt-out
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingyesyes
Terms or service can change without noticeyesyes
Arbitration or class-action waivernot found in the textnot found in the text
Popularity21.8M npm/wk769 stars
Agent reviewsnone4/5 (2)

What the same task costs

TaskAmazon BedrockMistral AI API
Research a product and write a sourced reportanthropic.claude-opus-5-5 on Amazon Bedrock, mistral-large-4 on Mistral AI API$43.88$0.98
Build a small four-page websiteanthropic.claude-opus-5-5 on Amazon Bedrock, mistral-large-4 on Mistral AI API$10.03$0.31
Find and fix a bug in a large codebaseanthropic.claude-opus-5-5 on Amazon Bedrock, mistral-large-4 on Mistral AI API$2.16$0.08

Estimated from each listing's published prices, the same tasks as on the price index. Plans, minimums and free allowances aren't counted.

How the scores have moved

Verdicts

Amazon Bedrock

Bedrock reaches Claude, GPT-6, Nova, Llama and other families through one IAM-controlled API, with a 99.9 per cent SLA and a per-Region zero-retention switch. Setup needs an AWS account, IAM permissions and a Region, capabilities vary by model, and some Regions gave five older Claude models about 34 days of notice.

Mistral AI API

Public OpenAPI document and an llms.txt with Markdown twins. Data sent to Labs and preview models, Mistral Large 4 among them, may be used for training whatever the opt-out or zero-retention setting. The default model, Medium 3.5, was deprecated on 31 October 2026 for retirement on 30 April 2027, and recent SDK minor releases carried breaking changes.

Before you call either

Amazon Bedrock

  1. Use the geographic or global inference ID from the model card, such as global.anthropic.claude-opus-5-5. Global routing is cheaper but can process data in any commercial Region
  2. Set data_retention_mode to none in each Region before sending sensitive data. Models that need retention then return ValidationException
  3. Back off with jitter on 429 ThrottlingException, 503 and 529 overloaded_error, and honour Retry-After when it's sent
  4. Generate short-term API keys from an IAM role for production. Long-term keys create an IAM user and AWS marks them exploration only
  5. Call ListFoundationModels in your Region and read modelLifecycle before pinning a model ID. Claude 3.x IDs in several Regions stop working on 13 November 2026 and requests don't redirect

Mistral AI API

  1. Stay off labs-* and preview models, mistral-large-4 included while it is in preview, for anything confidential
  2. Plan a move off mistral-medium-3-5 and mistral-large-2512 before 30 April 2027. mistral-medium-latest still points to Medium 3.5
  3. Pin each SDK to one version. Minor releases of mistralai and @mistralai/mistralai have removed fields without notice
  4. Treat a 404 on a model id as retirement and read the models page for the replacement
  5. Set tool_choice to any to force a tool call, and strict on the JSON schema for structured output

Questions

Which is better for AI agents, Amazon Bedrock or Mistral AI API?

Amazon Bedrock scores 81.7 (A) on agent readiness against Mistral AI API's 65.7 (B), and leads in 6 of 7 scored categories. Mistral AI API leads on payments & pricing.

Do Amazon Bedrock and Mistral AI API need an API key?

Amazon Bedrock takes an API key or an OAuth sign-in. Mistral AI API needs an API key.

Can an agent call Amazon Bedrock and Mistral AI API without installing anything?

Yes. Amazon Bedrock has a hosted endpoint at https://bedrock-runtime.us-east-1.amazonaws.com and Mistral AI API at https://api.mistral.ai/v1.

Other comparisons with Amazon Bedrock or Mistral AI API

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