Anthropic Claude Platform Docs
Models overview
Current Claude model IDs, pricing, context windows, latency notes, and availability.
Source index
Primary Sources
The source desk behind Claude Reports. These are the official docs, release notes, system-card indexes, and benchmark-owner pages used for the July 6, 2026 baseline.
Citable baseline
Source index facts
Dated facts with primary-source links where the underlying source is available.
20Primary sources indexed for reports, tools, and llms-full coverage.
8Anthropic source records for Claude model specs, pricing, launches, and system cards.
4Benchmark-owner source records for coding, terminal-agent, and reasoning context.
Anthropic
Anthropic Claude Platform Docs
Introducing Claude Fable 5 and Claude Mythos 5
Fable 5 and Mythos 5 capabilities, safeguards, availability, and pricing.
Anthropic
Introducing Claude Opus 4.8
Opus 4.8 launch, effort control, fast mode, agentic work claims, and pricing.
Anthropic Claude Platform Docs
What's new in Claude Opus 4.8
API-facing Opus 4.8 behavior, context, output, and platform features.
Anthropic
Introducing Claude Sonnet 5
Sonnet 5 launch, cost-performance positioning, pricing, safety notes, and availability.
Anthropic Claude Platform Docs
Choosing the right model
Model selection criteria and effort parameter guidance.
Anthropic Claude Platform Docs
Pricing
Claude per-token pricing, cache pricing, and model price table.
Anthropic
Model system cards
Index of system cards for Claude Sonnet 5, Opus 4.8, Fable 5, and earlier models.
OpenAI
OpenAI
Introducing GPT-5.5
GPT-5.5 benchmark claims, including SWE-Bench Pro and Terminal-Bench 2.0.
OpenAI API Docs
GPT-5.5 model docs
GPT-5.5 API pricing, context window, output limit, modalities, and model snapshot information.
OpenAI API Docs
GPT-5.4 model docs
GPT-5.4 API pricing, context window, output limit, modalities, and long-context pricing caveats.
OpenAI
Previewing GPT-5.6 Sol
GPT-5.6 Sol preview, reasoning effort modes, and benchmark positioning.
OpenAI Help Center
A preview of GPT-5.6 Sol, Terra, and Luna
Preview availability, model IDs, pricing, and ChatGPT exclusion during preview.
OpenAI
Why SWE-bench Verified no longer measures frontier coding capabilities
OpenAI argument that SWE-Bench Verified is contaminated and less useful for frontier coding models.
Benchmark
SWE-Bench
SWE-Bench Leaderboards
Official SWE-Bench leaderboard definitions and percent-resolved metric.
Scale Labs
SWE-Bench Pro Public Dataset
SWE-Bench Pro design, methodology, resolve-rate definition, and public leaderboard.
Terminal-Bench
[email protected] Leaderboard
Public agent-plus-model leaderboard for Terminal-Bench 2.0.
ARC Prize
ARC-AGI Series
ARC-AGI benchmark family and its focus on skill acquisition, abstraction, and generalization.
Research
arXiv
Terminal-Bench: Benchmarking Agents on Hard, Realistic Tasks in Command Line Interfaces
Terminal-Bench 2.0 task design, audit process, agent/scaffold caveats, and results methodology.
arXiv
Measuring Massive Multitask Language Understanding
Original MMLU paper describing 57 academic and professional subject areas.
Keep reading
Related verification surfaces
Internal links are selected to keep benchmark, tool, and methodology context together.
Method
Benchmark methodology
See how Claude Reports reads provenance, harness, effort, contamination, uncertainty, and cost.
Tool
Model comparison
Filter Claude, GPT, and benchmark-reference models by provider, access, price, context window, and published coding benchmark evidence.
Tool
Cost comparator
Estimate monthly API spend for Claude and OpenAI models from input tokens, output tokens, request volume, cache reuse, and long-context assumptions.
Freshness
Freshness log
Track model launches, benchmark revisions, source changes, and future weekly updates.