Claude Opus 4.5 vs MiniMax M3

rates, context and capabilities side by side on the impossibl api, and what the same workload costs on each.

the models at a glance: base rates, context window and modalities
specificationClaude Opus 4.5

anthropic/claude-opus-4-5

MiniMax M3

minimaxai/minimax-m3

input · usd / 1m tok$5.00$0.30
output · usd / 1m tok$25.00$1.20
context window200ktokens524.3ktokens
modalities · in → out

takes text and image in, gives text out

takes text and image in, gives text out

pricing

base api rates by model
base api rates · usd per 1m tokensClaude Opus 4.5

anthropic/claude-opus-4-5

MiniMax M3

minimaxai/minimax-m3

input$5.00$0.30over 512k · $0.60
output$25.00$1.20over 512k · $2.40
cache read$0.50$0.06over 512k · $0.12
cache write · default ttl$6.25not published
cache write · 1h ttl$10.00not published

brackets are by input tokens per request: a request over a threshold is billed at that bracket's rates for all of its tokens. cache creation can have a separate charge. the estimate below prices one workload at these rates on every model.

specifications

published specifications by model
as publishedClaude Opus 4.5

anthropic/claude-opus-4-5

MiniMax M3

minimaxai/minimax-m3

creatorAnthropicMiniMax
model typeText generationText generation
context window200,000tokens524,300tokens
input

takes text and image in, gives text out

takes text and image in, gives text out

outputtexttext
tool callingnot verifiednot verified
releasednov 24, 2025jun 1, 2026
endpoint/v1/chat/completions/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

benchmarks

benchmark scores by model, primary tested configuration
primary configurationClaude Opus 4.5

anthropic/claude-opus-4-5

non-reasoning

MiniMax M3

minimaxai/minimax-m3

intelligence index · gateway rank23.7#73 of 11429.2#54 of 114
omniscience-4.1#45 of 901.4#37 of 90
gpqa81.0%#57 of 82
92.9%#9 of 82
humanity’s last exam13.2%#72 of 93
39.0%#32 of 93
coding indexnot measured58.6#36 of 66
agentic indexnot measured29.5#28 of 54
tau286.3%
88.9%
livecodebench73.8%
not measured
mmmu-pro71.2%
78.6%
aa-lcr70.7%
83.0%
aime 202562.7%
not measured
ifbench43.0%
82.9%
terminal-bench hard40.9%
42.4%
critpt0.3%
3.7%
scicodenot measured47.1%
automationbench partialnot measured21.3%
tau bankingnot measured15.3%
analystagentnot measured10.0%
gdp.pdf all-passnot measured9.8%
multilingual lcrnot measured4.4%
harvey labnot measured0.0%

Claude Opus 4.5 source ↗MiniMax M3 source ↗

each column describes the tested configuration named under the model; performance and costs can differ on impossibl. a score one model was not measured on is left blank rather than scored zero. indices are ranked against every model on the gateway with one. last checked 2026-10-21.

estimate your cost

one token workload, priced on every model at the published rates, in usd. change the numbers to match yours.

token workload

total input, including cached tokens

include billable reasoning tokens

the same token usage in each request

a subset of total input, never additional tokens

Claude Opus 4.5

anthropic/claude-opus-4-5

estimated usage cost

$17.50

1,000 requests × (1,000 uncached input × $5.00 + 500 output × $25.00) / 1,000,000 = $17.50

base rates; no context pricing tiers are published.

MiniMax M3

minimaxai/minimax-m3

estimated usage cost

$0.90

1,000 requests × (1,000 uncached input × $0.30 + 500 output × $1.20) / 1,000,000 = $0.90

base rates: up to 512,000 input tokens per request, inclusive.

estimates use published impossibl api usage rates. configured billing adjustments, funding fees, taxes, and custom workspace rates are excluded and may change the final amount.

image and audio usage, cache creation, and additional tool charges are excluded. reasoning tokens count as billable output, even when they are not visible in the response.

summary

Claude Opus 4.5 and MiniMax M3 are available through the Impossibl API. they share the /v1/chat/completions endpoint; the model identifier selects the model for a request.

Claude Opus 4.5 is created by Anthropic. It has a 200,000-token context window. Base API pricing (USD): $5.00 per million input tokens; $25.00 per million output tokens.

MiniMax M3 is created by MiniMax. It has a 524,300-token context window. Base API pricing (USD): $0.30 per million input tokens; $1.20 per million output tokens. Above 512,000 input tokens per request, context-tier rates apply to the whole request.

Claude Opus 4.5 →MiniMax M3 →

this page compares Claude Opus 4.5 vs MiniMax M3 as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes.

view the source catalog ↗comparison as markdown ↗report a correction →