Claude Opus 5.5 vs MiMo V2.5

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 5.5

anthropic/claude-opus-5-5

MiMo V2.5

xiaomi/mimo-v2.5

input · usd / 1m tok$4.00$0.14
output · usd / 1m tok$20.00$0.28
context window1mtokens1.02mtokens
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 5.5

anthropic/claude-opus-5-5

MiMo V2.5

xiaomi/mimo-v2.5

input$4.00$0.14
output$20.00$0.28
cache read$0.20$0.003
cache write · default ttl$5.00not published
cache write · 1h ttl$8.00not published

the estimate below prices one workload at these rates on every model.

specifications

published specifications by model
as publishedClaude Opus 5.5

anthropic/claude-opus-5-5

MiMo V2.5

xiaomi/mimo-v2.5

creatorAnthropicXiaomi
model typeText generationText generation
context window1,000,000tokens1,024,000tokens
input

takes text and image in, gives text out

takes text and image in, gives text out

outputtexttext
tool callingnot verifiednot verified
releasedsep 22, 2026apr 23, 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 5.5

anthropic/claude-opus-5-5

no benchmarks yet

MiMo V2.5

xiaomi/mimo-v2.5

intelligence index · gateway ranknot measured22.3#55 of 90
coding indexnot measured56.8#35 of 60
agentic indexnot measured17.4#38 of 49
omnisciencenot measured-9.8#50 of 86
gpqanot measured84.9%#50 of 88
humanity’s last examnot measured27.2%#53 of 89
terminal-bench v2.1not measured63.7%#35 of 57
tau2not measured90.6%
mmmu-pronot measured75.4%
aa-lcrnot measured73.0%
ifbenchnot measured67.1%
scicodenot measured43.9%
terminal-bench hardnot measured41.7%
automationbench partialnot measured18.4%
tau bankingnot measured8.7%
gdp.pdf all-passnot measured4.0%
critptnot measured3.7%
terminal-bench v4.0not measured0.0%

MiMo V2.5 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 2026-09-11.

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 5.5

anthropic/claude-opus-5-5

estimated usage cost

$14.00

1,000 requests × (1,000 uncached input × $4.00 + 500 output × $20.00) / 1,000,000 = $14.00

base rates; no context pricing tiers are published.

MiMo V2.5

xiaomi/mimo-v2.5

estimated usage cost

$0.28

1,000 requests × (1,000 uncached input × $0.14 + 500 output × $0.28) / 1,000,000 = $0.28

base rates; no context pricing tiers are published.

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 5.5 and MiMo V2.5 are available through the Impossibl API. they share the /v1/chat/completions endpoint; the model identifier selects the model for a request.

Claude Opus 5.5 is created by Anthropic. It has a 1,000,000-token context window. Base API pricing (USD): $4.00 per million input tokens; $20.00 per million output tokens.

MiMo V2.5 is created by Xiaomi. It has a 1,024,000-token context window. Base API pricing (USD): $0.14 per million input tokens; $0.28 per million output tokens.

Claude Opus 5.5MiMo V2.5

this page compares Claude Opus 5.5 vs MiMo V2.5 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 →